| chi-square | A statistical technique whereby variables are categorised to determine whether a distribution of scores is due to chance or experimental factors. (05 Mar 2000) |
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| chi-square distribution | A distribution in which a variable is distributed like the sum of the the squares of any given independent random variable, each of which has a normal distribution with mean of zero and variance of one. The chi-square test is a statistical test based on comparison of a test statistic to a chi-square distribution. The oldest of these tests are used to detect whether two or more population distributions differ from one another. (12 Dec 1998) |
| chi-square test | A statistical method of assessing the significance of a difference, as when the data from two or more samples is represented by a discrete number such as the numbers of females and males attending each of two colleges. Synonym: x2 test. (05 Mar 2000) |
Synonyms : Chi Square Distribution, Chi Square Test, Chi-Square Distributions, Chi-Square Tests, Distribution, Chi-Square, Distributions, Chi-Square, Test, Chi-Square, Tests, Chi-Square
| chi-square test |
A chi-square test is any statistical hypothesis test in which the test statistic has a chi-square distribution if the null hypothesis is true. These include: * Pearson's chi-square test* Some likelihood-ratio tests are approximately chi-square tests when the sample-size is large. They are widely used in logistic regression. ...
출처: en.wikipedia.org/wiki/Chi-square_test
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| chi-square test |
A statistical significance test based on frequency of occurrence; it is applicable both to qualitative attributes and quantitative variables. Among its many uses, the most common are tests of hypothesized probabilities or probability distributions (goodness of fit), statistical dependence or independence (association), and common population (homogeneity). ...
출처: amsglossary.allenpress.com/glossary/browse
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| chi-square test |
A statistical test used to determine the probability of obtaining the observed results by chance, under a specific hypothesis.
출처: helios.bto.ed.ac.uk/bto/glossary/c.htm
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| chi-square |
see under distribution and test.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| chi-square t. |
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 specified theoretical model, and the χ2-test of independence or homogeneity, which tests whether two or more series of frequencies (the rows and columns of a contingency table) are independent. In both cases the test statistic is the sum over all categories of the squared difference between the observed and expected frequencies divided by the expected frequency, under the null hypothesis. The sampling distribution of this χ2-statistic approaches the χ2-distribution as the sample size increases, under the null hypothesis.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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보험코드 | 성분/함량 | 구분/보험급여 |
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보험코드 | 성분/함량 | 구분/보험급여 |
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