- goodness-of-fit chi-square test
- критерий согласия хи-квадрат, χ2-критерий согласия
English-Russian electronics dictionary .
goodness-of-fit chi-square test
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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 — any statistical hypothesis test that employs the chi square (χ2) distribution (q.v.), especially two tests applied to categorical data: the χ2 test of goodness of fit, which tests whether an observed frequency distribution fits a… … Medical dictionary
chi-square test — /ˈkaɪ skwɛə ˌtɛst/ (say kuy skwair .test) noun Statistics a test devised to assess the mathematical goodness of fit of a frequency curve to an observed frequency distribution …
chi-square test — a statistical method assessing the goodness of fit between a set of observed values and those expected theoretically. → chi … English new terms dictionary
Pearson's chi-square test — Pearson s chi square ( chi;2) test is the best known of several chi square tests – statistical procedures whose results are evaluated by reference to the chi square distribution. Its properties were first investigated by Karl Pearson. In contexts … Wikipedia
Chi-squared test — Chi square test is often shorthand for Pearson s chi square test. A chi square test, also referred to as chi squared test or χ2 test, is any statistical hypothesis test in which the sampling distribution of the test statistic is a chi square… … Wikipedia
Goodness of fit — The goodness of fit of a statistical model describes how well it fits a set of observations. Measures of goodness of fit typically summarize the discrepancy between observed values and the values expected under the model in question. Such… … Wikipedia
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
Goodness-Of-Fit — Used in statistics and statistical modelling to compare an anticipated frequency to an actual frequency. Goodness of fit tests are often used in business decision making. In order to calculate a chi square goodness of fit, it is necessary to… … Investment dictionary
chi — chi1 [kʌɪ] noun the twenty second letter of the Greek alphabet (Χ, χ), transliterated as ‘kh’ or ‘ch’. Phrases chi square test a statistical method assessing the goodness of fit between a set of observed values and those expected theoretically.… … English new terms dictionary
Chi-squared distribution — This article is about the mathematics of the chi squared distribution. For its uses in statistics, see chi squared test. For the music group, see Chi2 (band). Probability density function Cumulative distribution function … Wikipedia
