In mathematics , the ratiotest is a convergence tests test or criterion for the convergent series convergence ... number and math a n math is nonzero when n is large. The test was first published by Jean le Rond d Alembert and is sometimes known as d Alembert s ratiotest . The test The usual form of the test ... right . math EquationRef 1 The ratiotest states that if L 1 then the series absolute convergence converges absolutely if L 1 then the series does not converge if L 1 or the limit fails to exist, then the test ... this case. It is possible to make the ratiotest applicable to certain cases where the limit L fails to exist, if limit superior and limit inferior are used. The test criteria can also be refined so that the test ... ratiotest is a weaker version of the refined one. Examples Convergent because L 1 Consider the series math sum n 1 infty frac n e n math Putting this into the ratiotest math L lim n to infty left ... Putting this into the ratiotest math L lim n to infty left frac a n 1 a n right lim n to infty left ... may converge or diverge and hence the original ratiotest is inconclusive. For the first series math sum n 1 infty 1, math , however, as the term by term magnitude ratio math left frac a n 1 a n right 1 math for all n , we can apply the third criterion in the refined version of the ratiotest to conclude that the series diverges. Proof Below is a proof of the validity of the original ratiotest ... in the previous example, the ratiotest may be inconclusive when the limit of the ratio is 1. Extensions to ratiotest, however, sometimes allows one to deal with this case. For instance, the aforementioned ... s ratiotest and Raabe s test are the first and second theorem in a hierarchy of such theorems due ... a n 1 a n right math and math r lim inf left frac a n 1 a n right math . Then the ratiotest states that ref harvnb Rudin 1976 loc 3.34 ref ref harvnb Apostol 1974 loc 8.14 ref ... math a n math is nonzero and increasing and hence math a n math does not approach zero the test is otherwise ... more details
Expert subject Statistics date November 2008 In statistics , a likelihood ratiotest is a statistical test used to compare the fit of two models, one of which the null hypothesis null model is a special case of the other the alternative hypothesis alternative model . The test is based on the likelihood ratio, which expresses how many times more likely the data are under one model than the other. This likelihood ratio, or equivalently its logarithm , can then be used to compute a p value , or compared ... of the alternative model. When the logarithm of the likelihood ratio is used, the statistic is known as a log likelihood ratio statistic , and the probability distribution of this test statistic ... of the likelihood ratiotest can be justified by the Neyman Pearson lemma , which demonstrates that such a test ... over two different sets in the numerator and denominator. A likelihood ratiotest is a statistical test for making a decision between two hypotheses based on the value of this ratio. It is central ... specified there are no unknown parameters to estimate. The likelihood ratiotest statistic can be written ... states that this likelihood ratiotest is the Statistical power most powerful among all level math alpha math tests for this problem. Definition likelihood ratiotest for composite hypotheses A null hypothesis ... Here, the math sup math notation refers to the Supremum function. A likelihood ratiotest is any ... x math , the LR is therefore a statistic . The likelihood ratiotest rejects the null hypothesis ... Practical application of Likelihood ratiotest described http faculty.vassar.edu lowry clin2.html ... inference DEFAULTSORT Likelihood RatioTest Category Statistical ratios Category Statistical tests ... model, is separately fitted to the data and the log likelihood function likelihood recorded. The test ... hypothesis, the probability distribution of the test statistic is approximately a chi squared distribution ... of free parameters of models 1 and 2, the null model and the alternative model, respectively. The test ... more details
The sequential probability ratiotest SPRT is a specific Sequential analysis sequential hypothesis test , developed by Abraham Wald . ref cite journal first Abraham last Wald title Sequential Tests of Statistical Hypotheses journal Annals of Mathematical Statistics volume 16 issue 2 date June, 1945 pages 117 186 doi 10.1214 aoms 1177731118 year 1945 jstor 2235829 ref Neyman Pearson lemma Neyman and Pearson .... H. M. year 1999 title Item Selection in Adaptive Testing with the Sequential Probability RatioTest ... between items. See also CUSUM Computerized classification test Wald test Likelihood ratiotest ... de Sequential Probability RatioTest ... ratio known . While originally developed for use in quality control studies in the realm of manufacturing ... test for a program of individually prescribed instruction . Unpublished doctoral dissertation, University ... sum of the log likelihood ratio , math log Lambda i math , as new data arrive math S i S i ... the continue sampling region . Applications Manufacturing The test is done on the proportion metric ... would be sampled one at a time from the lot sequential analysis until the test determines, within ... classification test CCT . The two parameters are p sub 1 sub and p sub 2 sub are specified by determining ... above and below that cutscore. For instance, suppose the cutscore is set at 70 for a test. We could select p sub 1 sub 0.65 and p sub 2 sub 0.75 . The test then evaluates the likelihood that an examinee ... that the test designer is OK with going either way pass or fail . The upper parameter p sub 2 sub is conceptually the highest level that the test designer is willing to accept for a Fail because everyone ... that the test designer is willing to accept for a pass because everyone above it has a decent chance ... testing high stakes case of a licensing test for medical doctors at just what point should we consider ... of classical test theory , as is applied in the previous paragraph , Reckase 1983 suggested that item ... more details
The A S ratio is the proportion of the brain not directly connected with either receptor inputs or motor outputs, where A is the association cortex and S is the sensory cortex . The A S ratio can be measured for any organism with a brain, and the higher the A S ratio, the more complex the brain is. It was proposed by Donald Olding Hebb Donald Hebb in 1949. References cite book last Lerner first Dr. Richard M. title Concepts and Theories of Human Development year 2002 publisher L. Erlbaum location Mahwah, N.J. isbn 0585387362 9780585387369 oclc 49569701 DEFAULTSORT A S Ratio Category Central nervous system Category Cerebrum Category Neuroanatomy neuroanatomy stub ... more details
Otheruses4 the mathematical concept the Swedish institute Ratio Institute the academic journal Ratio journal the philosophical concept Reason the legal concept Ratio decidendi File Aspect ratio 4x3.svg thumb The ratio of width to height of standard definition television . In mathematics , a ratio is a relationship ... an integer . ref Penny Cyclopedia, p. 307 ref In layman s terms a ratio represents, simply, for every ... of socks for every pair of shoes then the ratio of shoes socks would be 1 10 and the ratio of socks shoes would be 10 1 Notation and terminology The ratio of numbers A and B can be expressed as ref New International Encyclopedia ref the ratio of A to B A is to B A B A rational number which is the quotient ... wiktionary It is impossible to trace the origin of the concept of ratio, since the ideas from which .... ref Smith, p. 477 ref However, it is possible to trace the origin of the word ratio to the Ancient Greek logos . Early translators rendered this into Latin as wikt ratio Latin ratio reason ..., p. 307 ref Medieval writers used the word proportio proportion to indicate ratio and proportionalitas ... of ratio and proportion as applied to numbers. ref Heath, p. 112 ref The Pythagoreans conception ... what a ratio is in a general way. It is not rigorous in a mathematical sense and some have ascribed ... Eleventh Edition p682. ref Euclid defines a ratio to be between two quantities of the same type , so by this definition the ratios of two lengths or of two areas are defined, but not the ratio of a length and an area. Definition 4 makes this more rigorous. It states that a ratio of two quantities exists when there is a multiple of each which exceeds the other. In modern notation, a ratio exists ... not be possible to assign a rational value to a ratio, it is possible to compare a ratio with a rational number. Specifically, given two quantities, p and q , and a rational number m n we can say that the ratio ... that have the same ratio are proportional or in proportion . Euclid uses the Greek analogon ... more details
Likelihood ratio may refer to The ratio of two likelihood function s Likelihood ratiotest , a statistical test for comparing two models. Likelihood ratios in diagnostic testing , ratios based on sensitivity and specificity, used to assess diagnostic tests. Bayes factor , ratio of likelihoods used to update prior probabilities to posterior in Bayes theorem and Bayesian inference . disambig ... more details
Other uses Acid test disambiguation In finance , the Acid test or quick ratio or liquid ratio measures the ability of a company to use its near cash or quick assets to extinguish or retire its current liability current liabilities immediately. Quick assets include those current asset s that presumably can be quickly converted to cash at close to their book value s. A company with a Quick Ratio of less than 1 cannot currently pay back its current liabilities. math mbox Quick Acid TestRatio mbox Cash and Cash Equivalent mbox Marketable Securities mbox Accounts Receivable over mbox Current Liabilities math Note that Inventory is excluded from the sum of assets financially. Ratio are financially viable option for business entities but the liquidity of the liabilities show financial stability. Generally, the acid testratio should be 1 1 or higher, however this varies widely by industry. ref cite book last Tracy first John A. title How to Read a Financial Report Wringing Vital Signs Out of the Numbers year 2004 publisher John Wiley and Sons isbn 0471646938 page 173 ref In general, the higher the ratio, the greater the company s liquidity i.e., the better able to meet current obligations using liquid assets . ref cite book last Gallagher first Timothy title Financial Management publisher Prentice Hall location Englewood Cliffs year 2003 isbn 0130674885 pages 94 95 ref Notice that very often Acid test refers instead of Quick ratio to Cash ratio math mbox Acid TestRatio mbox Current Assets mbox Inventory over mbox Current Liabilities math There is also another Quick Ratio which is widely used math mbox Quick Ratio mbox Total Assets over mbox Total Liabilities math Total Liabilities excludes Share Capital and Retained Earnings See also Current ratio Financial Accounting References references Category Financial ratios de Acid TestRatio es Test cido he nl Quick ratio ja pl QR ru fi Maksuvalmiussuhde sv Kassalikviditet th ... more details
The Test may refer to The Test short story , ashort story by Franz Kafka The Test novel The Test novel , a novel by Mary Tappan Wright The Test Animorphs The Test Animorphs , a novel in the Animorphs series by K. A. Applegate Come with Us The Test Come with Us The Test , a single by The Chemical Brothers The Test 1935 film The Test 1935 film , an American film directed by Bernard B. Ray In television episodes The Test Dad s Army The Test Dad s Army The Test Land of the Lost The Test Land of the Lost The Test The O.C. The Test The O.C. See also Test disambiguation disambig ... more details
Liquidity Ratio may refer to Reserve requirement , a bank regulation that sets the minimum reserves each bank must hold. Acid Test Liquidity Ratio , a ratio used to determine the liquidity of a business entity. Liquidity ratio, expresses a company s ability to repay short term creditors out of its total cash. The liquidity ratio is the result of dividing the total cash by short term borrowings. It shows the number of times short term liabilities are covered by cash. If the value is greater than 1.00, it means fully covered. The formula is the following LR liquid assets short term liabilities. disambig ... more details
This Is Not a Test may refer to This Is Not a Test 1962 film This Is Not a Test 1962 film , a nuclear war film directed by Fredric Gadette This Is Not a Test 2008 film This Is Not a Test 2008 film , a comedy drama film starring Hill Harper This Is Not a Test , a 2003 album by Missy Elliott This Is Not A Test Kyle XY This Is Not A Test Kyle XY , a season one episode of science fiction television series Kyle XY This Is Not a Test , a song by Bikini Kill from their 1991 album Revolution Girl Style Now This Is Not a Test , a song by Zooey Deschanel from the She & Him album Volume One She & Him album Volume One This Is Not a Test , a song by Christmas from their album Ultraprophets Of Thee Psykick Revolution Disambiguation ... more details
Not sandbox wiktionary TESTTest Tests testing tests Test , TEST or Tester may refer to Test assessment , an assessment intended to measure the respondents knowledge or other abilities Physical fitness test Driving test Performance test assessment Performance test bar exam Test match disambiguation , an international sporting contest River Test , a river in England The upper part of a four poster bed Tester, a canopy over a tomb or pulpit, also known as a sounding board tocright Mathematics and statistics Statistical test , a statistical procedure aiming to classify the elements of a population ... thinking on a topic test Unix , a Unix command for evaluating conditional expressions TEST x86 ... program works as expected Experiment , a part of the scientific method Test biology , the shell of sea urchins and certain microorganisms Test method , a definitive procedure that produces a test result Chemical test , a procedure designed to prove the existence of, or to quantify, a particular ... Physical test , a method for determining characteristics of a product Toxicology testing People Desmond Tester 1919 2002 John Test 1771 1849 Jon Tester born 1956 , junior Senator from Montana ... , American novelist Zachary Test born 1989 , American rugby union player Andrew Martin 1975 2009 , professional wrestler who used the ring name Test Media and entertainment Tests album Tests album ... show produced by Sony about videogame testing Johnny Test , an American Canadian animated television series See also Legal tests Lists of tests Quality infrastructure The Test disambiguation example.com disambiguation pp semi vandalism small yes pp move indef ar az Test d qiql dirm ca Test desambiguaci cs Testov n da Test de Test Begriffskl rung es Test fr Test ko lt Testas hu Test egy rtelm s t lap nl Test ja no Test pl Test pt Teste ru sk Test sv Test th Test tr Test uk zh Test ... more details
This is a test may refer to The Emergency Alert System System test testing of the Emergency Alert System The Emergency Broadcast System Testing the system testing of the former Emergency Broadcast System disambiguation ... more details
The Sharpe ratio or Sharpe index or Sharpe measure or reward to variability ratio is a measure of the excess ... return over the benchmark return the Sharpe ratio utilizes the asset standard deviation whereas the information ratio utilizes standard deviation of excess return over the benchmark, i.e. the tracking ... the period, math sqrt mathrm var R R f sqrt mathrm var R . math Use in finance The Sharpe ratio is used ... the Sharpe ratio number the better. When comparing two assets each with the expected return ... ratio gives more return for the same risk. Investors are often advised to pick investments with high ... schemes with a long duration of operation would typically provide a high Sharpe ratio when derived ... with smoothing of returns such as with profits funds the Sharpe ratio should be derived from the performance ... ratio s and Jensen s alpha s, are often used to rank the performance of portfolio or mutual fund managers. Tests Several statistical tests of the Sharpe ratio have been proposed. These include those proposed ... name Gibbons1989 Gibbons M, Ross S and Shanken J 1989 . A test of the efficiency of a given portfolio. Econometrica, 57, 1121 1152 ref History In 1952, A. D. Roy suggested maximizing the ratio m d ... First and the Holding of Assets journal Econometrica volume 1952 issue July pages 431 450 ref This ratio is just the Sharpe ratio, only using minimum acceptable return instead of risk free return in the numerator ... in the denominator. In 1966, William Forsyth Sharpe developed what is now known as the Sharpe ratio ... to variability ratio before it began being called the Sharpe ratio by later academics and financial ... R f math . Recently, the original Sharpe ratio has often been challenged with regard to its appropriateness ... last Scholz first Hendrik year 2007 title Refinements to the Sharpe ratio Comparing alternatives ... is constant. Then the Sharpe ratio using a new definition will be 1.5 math R R f 0.15 math and math ... 16 . Doing the math, we get that the average, long term Sharpe ratio of the US market is about ... more details
Infobox Top level domain name test background 6CC image introduced 1999 type Top level domain Reserved TLDs Reserved top level domain status Reserved to prevent conflict and confusion intendeduse In documentation or for internal testing actualuse restrictions structure Those using it for testing can use it in any desired structure document RFC 2606 The name test is reserved by the Internet Engineering Task Force IETF in RFC 2606 June 1999 as a domain name that is not intended to be installed as a top level domain TLD in the global Domain Name System DNS of the Internet for production use. ref name rfc RFC 2606 BCP 32 , Reserved Top Level DNS Names , D. Eastlake, A. Panitz, The Internet Society June 1999 ref Reserved DNS names In 1999, the Internet Engineering Task Force reserved the DNS labels tt .example example tt , tt .invalid invalid tt , tt .localhost localhost tt , and tt test tt so that they may not be installed into the DNS root zone root zone of the Domain Name System. The reasons for reservation of these top level domain names is to reduce the likelihood of conflict and confusion. ref name rfc This allows the use of these names for either documentation purposes or in local testing scenarios. References reflist GTLD DEFAULTSORT TEST Category Top level domains Category 1999 introductions ca .test cs .test da .test eu .test fr .test it .test hu .test ja . no .test oc .test pl .test ru .test sv Toppdom n Generiska toppdom ner ... more details
Articles on Pressure ratio include Compression ratio , for piston engines Overall pressure ratio , for gas turbine engines Pressure ratio may also refer to the compression ratio of a gas compressor disambig ... more details
Refimprove date June 2009 The contrast ratio is a property of a display system, defined as the ratio ... of producing. A high contrast ratio is a desired aspect of any display. It has similarities with dynamic range . There is no official, standardized way to measure contrast ratio for a system or its parts, nor is there a standard for defining Contrast Ratio that is accepted by any standards organization ..., the contrast ratio of the image would be the same as the contrast ratio of the display device ... ratio seen in the image. Moving from a system that displays a static motionless image to a system that displays a dynamic, changing picture slightly complicates the definition of the contrast ratio ... the ratio of the luminosity of the brightest and the darkest color the system is capable of producing simultaneously at any instant of time is called static contrast ratio , while the ratio of the luminosity ... dynamic contrast ratio . Methods of measurement Many display devices favor the use of the full on full off method of measurement, as it cancels out the effect of the room and results in an ideal ratio ... proportionally, leaving the black to white luminance ratio unaffected. Some manufacturers have ... contrast ratio. With Digital Light Processing DLP projectors, one method to do this is to enable ... contrast ratio.html Extensive coverage of practical contrast ratio ref This practice is rather dubious ... measure is the ANSI contrast , in which the measurement is done with a checker board patterned test ... of including the effects of the room into the measurement, if the test is not performed in a room ... the dynamic contrast ratio of a display, while the ANSI contrast measures the static contrast ratio ... DC , also called advanced contrast ratio ACR, http ts.fujitsu.com products displays l line display ... the benefit of realizing the potential static contrast ratio of the LCD panel in dark scenes when ..., the brighter the screen. It is also common to market only the dynamic contrast ratio capability ... more details
For compression ratio in data compression data compression ratio Refimprove date May 2009 The compression ratio of an internal combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its largest capacity to its smallest capacity. It is a fundamental specification for many common combustion engines. In a piston engine it is the ratio ... Compression ratio url http www.britannica.com EBchecked topic 130313 compression ratio accessdate 2009 ... the head or combustion chamber has been reduced to 100 cc, then the compression ratio would be proportionally described as 1000 100, or with fractional reduction, a 10 1 compression ratio. A high compression ratio is desirable because it allows an engine to extract more mechanical energy from ... will also lead to engine knock. Formula The ratio is calculated by the following formula math mbox ... ratios Petrol gasoline engine Due to engine knocking pinging detonation , the compression ratio ... the brand name SkyActiv with 14 1 compression ratio, to be used in all Mazda vehicles by 2015. ref ... will customarily exceed 14 1 and ratios over 22 1 are common. The appropriate compression ratio ... compression ratio based on cylinder pressure. If the nominal compression ratio of an engine ... which is usually at 1 atm, math text CR math is the compression ratio, and math gamma math is the specific heat ratio for the working fluid, which is about 1.4 for air, and 1.3 for methane air mixture. For example, if an engine running on gasoline has a compression ratio of 10 1, the cylinder pressure ... as between 15 and 20 times the compression ratio, or in this case between 150 psi and 200 psi, depending ... can produce a misleadingly low figure from this test. Excessive connecting rod clearance, combined .... If a compression test does give a low figure, and it has been determined it is not due to intake ... the mentioned seal. If a second compression test is performed shortly thereafter, and the new reading ... more details
Other uses This Is Not a Test disambiguation Infobox album See Wikipedia WikiProject Albums Name This Is Not a Test Type studio Artist Missy Elliott Cover Missy Elliott This is not a test Album.jpg Released Start date 2003 11 25 br small see Release history release history small Recorded 2002 2003 Genre Hip hop music Hip hop , Contemporary R&B R&B Length 56 05 Label The Goldmind Inc. Goldmind Elektra ... Under Construction Missy Elliott album Under Construction br 2002 This album This Is Not a Test br 2003 Next album The Cookbook br 2005 Misc Singles Name This Is Not a Test Type studio single 1 Pass That Dutch single 1 date October 14, 2003 single 2 I m Really Hot single 2 date March 23, 2004 This Is Not a Test ... article record review 17441 Missy Elliott This Is Not a Test Pitchfork Media review ref rev7 ... 296896 review 6067976 this is not a test Rolling Stone review ref rev8 Robert Christgau rev8score ... stars, saying, Why anybody would choose to spend their life without a copy of This Is Not a Test is a mystery. ref cite web last Sheffield first Rob date 2003 12 02 title Missy Elliott This Is Not A Test ... missyelliott albums album 296896 review 6067976 this is not a test?rating 11 accessdate 2008 11 ... Martin first Dan date 2003 12 03 title Elliott, Missy This Is Not A Test work NME publisher Robert ... This Is Not A Test Review work Blender magazine Blender publisher Dennis Publishing url http .... ref cite web last Bush first John title This Is Not a Test Overview work Allmusic url Allmusic class album id r665996 pure url yes accessdate 2008 11 25 ref This Is Not a Test placed on Slant Magazine ... web title Missy Elliott This Is Not A Test Music Charts work Charts url http acharts.us album 13197 ... Albums Charts Flanders ref name ultratop cite web title Missy Elliott This Is Not a Test album work Ultratop url http www.ultratop.be nl showitem.asp?interpret Missy Elliott&titel This Is Not A Test ... Elliott albums Category Elektra Records albums cs This Is Not a Test it This Is Not a Test fi This Is Not a Test ... more details
atrial contraction and is therefore absent in patients with atrial fibrillation , making the E A ratio very large. ref name Mohamed The E A ratio is a first generation test for diastolic performance ...The E A ratio is the ratio between early E and late atrial A ventricular filling velocity. The early E diastolic one is caused by accumulation of blood in the atria during previous systole, and second, a late one created by atrial contraction A . In a young and compliant heart, early ventricular filling accounts for 80 of ventricular end diastolic volume with atrial systole pushing the last 20 of blood into the ventricle . Thus, the E component of the ratio is greater than the A component. In an aging, less compliant heart, a greater proportion of this blood is pushed into the ventricles during atrial systole. In this scenario, the emphasis of ventricular filling during late diastole increases the A component of the E A ratio causing a reversal of the ratio. The reversal of the E A ratio is widely accepted as a clinical marker of diastolic heart failure. It can be estimated by doppler echocardiography . ref name Mohamed In diastolic dysfunction , a greater portion of end diastolic volume results from late filling rather than early filling. Therefore, the E A ratio is reduced in diastolic dysfunction. ref name Mohamed http www.bioline.org.br request?mj04008 Abdul Latif Mohamed, Jun Yong, Jamil Masiyati, Lee Lim, Sze Chec Tee. The Prevalence Of Diastolic Dysfunction In Patients With Hypertension .... The E A ratio is measured by placing a pulse wave doppler across the mitral valve, and measuring the velocities across the valve. Hence the other names for the test transmitral velocity profile ... relaxation E A reversal ie E is A 3. Pseudonormal E A ratio appears normal 4. Restrictive filling E A ratio often 2 Pseudonormalisation shows a transmitral profile that appears normal, however ... and tachycardia can result in alterations, whereas bradycardia actually increases the E A ratio. These are some ... more details
A ratio distribution or quotient distribution is a probability distribution constructed as the distribution of the ratio of random variable s having two other known distributions. Given two random variables X and Y , the distribution of the random variable Z that is formed as the ratio math Z X Y , math is a ratio distribution . The Cauchy distribution is an example of a ratio distribution. The random variable associated with this distribution comes about as the ratio of two normal distribution Gaussian ... ratio distribution . A number of researchers have considered more general ratio distributions ... jstor 2283145 ref ref name HinkleyD1969On Cite journal author D. V. Hinkley title On the Ratio ... Hayya , Donald Armstrong and Nicolas Gressis title A Note on the Ratio of Two Normally Distributed ... 1569 1591 doi 10.1080 03610920600683689 title Density of the Ratio of Two Normal Random Variables and Applications author T. Pham Gia , N. Turkkan and E. Marchand ref Two distributions often used in test ... ratio distributions The t distributed random variable is the ratio of a Gaussian distribution Gaussian ... root of a chi squared distribution , while the F distributed random variable is the ratio of two independent chi squared distribution chi squared distributed random variables. Often the ratio ... an associated statistical test . A method based on the median has been suggested as a work around ... pmid 12235357 pmc 130571 ref Algebra of random variables main Algebra of random variables The ratio is one type of algebra for random variables Related to the ratio distribution are the product ..., if a product is C AB and a ratio is D C A it does not necessarily mean that the distributions of D and B are the same. Indeed, a peculiar effect is seen for the Cauchy distribution The product and the ratio ... when regarding the Cauchy distribution as itself a ratio distribution of two Gaussian distributions ... C 3 G 4 G 3 math . The first term is the ratio of two Cauchy distributions while the last term is the product ... more details
Corporate finance Accounting A financial ratio or accounting ratio is a relative magnitude of two selected ... that are usually more than 1, such as P E ratio these latter are also called multiples. Given any ratio, one can take its Reciprocal mathematics reciprocal if the ratio was above 1, the reciprocal ... for instance, the earnings yield can be compared with bond yields, while the P E ratio cannot be for example, a P E ratio of 20 corresponds to an earnings yield of 5 . Sources of data for financial ... the ratio measures. Liquidity ratios measure the availability of cash to pay debt. ref Groppelli, p ... frac mbox Net Income mbox Average Shareholders Equity math Return on investment ROI ratio or Du Pont Ratio ref name Groppelli, p. 445 math frac mbox Net Income mbox Average Total Assets math Return ... Market Recapitalisation math Efficiency ratio math frac mbox Non Interest expense mbox Revenue math Net gearing math frac mbox Net debt mbox Equity math Basic Earnings Power Ratio ref Cite book last ... liquidity Liquidity ratios measure the availability of cash to pay debt. Current ratio Current ratio Working Capital Ratio ref name Groppelli, p. 435 Groppelli, p. 435. ref math frac mbox Current Assets mbox Current Liabilities math Quick ratio Acid testratio Quick ratio ref name Groppelli, p. 435 math frac mbox Current Assets Inventories Prepayments mbox Current Liabilities math Cash ratio ... math Operating cash flow Operation cash flow ratio math frac mbox Operating Cash Flow mbox Total Debts ... math frac mbox Percent Change in Net Operating Income mbox Percent Change in Sales math DSO Ratio ... ratio ref Groppelli, p. 438. ref ref Weygandt, J. J., Kieso, D. E., & Kell, W. G. 1996 . Accounting .... 801 802. ref math frac mbox Cost of Goods Sold mbox Average Inventory math Receivables Turnover Ratio ... Sales mbox Average Net Receivables math Inventory conversion ratio ref name Groppelli, p. 439 ... ratio ref Groppelli, p. 440 Williams, p. 640. ref math frac mbox Total Liabilities mbox Total Assets ... more details
to test the hypothesis that the population odds ratio equals one, the two sided p value is 2 P Z ...The odds ratio ref cite journal last Cornfield first J journal Journal of the National Cancer Institute ... ratio treats the two variables being compared symmetrically, and can be estimated using some types of non random samples. Definition Definition in terms of group wise odds The odds ratio is the ratio ... is also used to refer to sample based estimates of this ratio. These groups might be men and women ... second group , then the odds ratio is math p 1 1 p 1 over p 2 1 p 2 p 1 q 1 over p 2 q 2 frac p 1q 2 p 2q 1 , math where q sub x sub 1 &minus p sub x sub . An odds ratio of 1 ... ratio greater than 1 indicates that the condition or event is more likely to occur in the first group. And an odds ratio less than 1 indicates that the condition or event is less likely to occur in the first group. The odds ratio must be nonnegative if it is defined. It is undefined if p sub 2 sub ... of joint and conditional probabilities The odds ratio can also be defined in terms of the joint ... p 00 math center Thus the odds ratio is math dfrac p 11 p 11 p 10 p 10 p 11 p 10 bigg dfrac p 01 p ... the odds ratio based on the conditional probabilities given Y , center class wikitable style text align ... math 1 p x 1 p y math center In this case, the odds ratio equals one, and conversely the odds ratio can only equal one if the joint probabilities can be factored in this way. Thus the odds ratio equals ... from the odds ratio and marginal probabilities The odds ratio is a function of the cell probabilities, and conversely, the cell probabilities can be recovered given knowledge of the odds ratio and the marginal ... Y 1 p sub 11 sub p sub 01 sub . If the odds ratio R differs .... Example Image odds ratio map.svg 300px right thumb A graph showing how the log odds ratio ... odds ratio shown here is based on the odds for the event occurring in group B relative to the odds ... more details
orphan date August 2008 Retention Ratio indicates the percentage of a company s earnings that are not paid out in dividends but credited to retained earnings . It is the opposite of the dividend payout ratio , so that also called the retention rate. Retention Ratio 1 Dividend Payout Ratio Retained Earnings Net Income Retention ratio is also called plowback ratio . Category Finance finance stub ... more details
Primarysources date April 2009 s s The Omega ratio is a measure of risk of an investment asset, portfolio or strategy. It involves partitioning returns into loss and gain above and below a given threshold, the math Omega math ratio is then the ratio of the probability of having a gain by the probability of having a loss. The ratio is calculated as math Omega r frac int r infty 1 F x ,dx int infty r F x dx math where F is the cumulative distribution function, r the threshold defining the gain versus the loss. The higher the ratio the better. To the contrary of the Sharpe ratio , where only the first two moments have an influence on the risk measure, the math Omega math ratio enables to take into account all moments of the distribution. The ratio was created by Keating and Shadwick ref http faculty.fuqua.duke.edu charvey Teaching BA453 2006 Keating An introduction to.pdf Omega ratio ref See also Post modern portfolio theory Upside potential ratio Sharpe ratio Sortino ratio Modern Portfolio Theory References Reflist stock market Category Financial ratios ... more details
In chemistry and physics , the dimensionless mixing ratio is defined as the abundance of one component of a mixture relative to that of all other components. The term can refer either to mole ratio or mass ratio. ref GoldBookRef file M03948 title mixing ratio ref Mole ratio In atmospheric chemistry , mixing ratio usually refers to the mole ratio math r i math , which is defined as the amount of substance amount of a constituent math n i math divided by the total amount of all other constituents in a mixture math r i frac n i n tot n i math The mole ratio is also called amount ratio . ref http www.iupac.org publications pac 80 2 0233 ref If math n i math is much smaller than math n tot math which is the case for atmospheric trace constituents , the mole ratio is almost identical to the mole fraction . Mass ratio In meteorology , mixing ratio usually refers to the mass ratio math zeta i math , which is defined as the mass of a constituent math m i math divided by the total mass of all other constituents in a mixture math zeta i frac m i m tot m i math The mass ratio of water vapor in air can be used to describe Humidity Mixing ratio or humidity ratio humidity . References Reflist Category Units of chemical measurement fa fr Rapport de m lange it Rapporto di mescolanza ... more details
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