chi-square — chi′ square [[t]ˈkaɪ[/t]] n. sta a statistical quantity equal to the summation over all variables of the quotient of the square of the difference between the observed and expected values divided by the expected value of the variable • Etymology:… … From formal English to slang
chi-square — [kī′skwer′] n. a statistical method used to test whether the classification of data can be ascribed to chance or to some underlying law … English World dictionary
chi-square — noun A test statistic used in the chi square test … Wiktionary
Chi-square test — is often shorthand for Pearson s chi square test. A chi square test (also chi squared or chi^2 test) is any statistical hypothesis test in which the test statistic has a chi square distribution when the null hypothesis is true, or any in which… … Wikipedia
chi-square test — chi′ square (or chi′ squared ) test n. sta a test that uses the quantity chi square for testing the mathematical fit of a frequency curve to an observed frequency distribution • Etymology: 1935–40 … From formal English to slang
chi square test — chi kvadrato kriterijus statusas T sritis biomedicinos mokslai apibrėžtis ↑Statistinis kriterijus, dažniausiai taikomas tikrinant ↑kokybinių kintamųjų ryšio hipotezes. atitikmenys: angl. chi square test ryšiai: sinonimas – χ² kriterijus šaltinis… … Lithuanian dictionary (lietuvių žodynas)
Chi-square distribution — Probability distribution name =chi square type =density pdf cdf parameters =k > 0, degrees of freedom support =x in [0; +infty), pdf =frac{(1/2)^{k/2{Gamma(k/2)} x^{k/2 1} e^{ x/2}, cdf =frac{gamma(k/2,x/2)}{Gamma(k/2)}, mean =k, median… … Wikipedia
chi-square test — Statistics. a test devised by Karl Pearson that uses the quantity chi square for testing the mathematical fit of a frequency curve to an observed frequency distribution. Also, chi squared test /kuy skwaird /. [1935 40] * * * chi square test UK… … Useful english dictionary
Chi-square target models — Swerling models were introduced by Peter Swerling and are used to describe the statistical properties of the radar cross section of complex objects.General Target ModelSwerling target models give the RCS of a given object based on the chi square… … Wikipedia
Chi Square Statistic — A measurement of how expectations compare to results. The data used in calculating a chi square statistic must be random, raw, mutually exclusive, drawn from independent variables and be drawn from a large enough sample. For example, the results… … Investment dictionary
