chi-square distribution

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chi-square distribution

(ˈkaɪˌskwɛə)
n
(Statistics) statistics a continuous single-parameter distribution derived as a special case of the gamma distribution and used esp to measure goodness of fit and to test hypotheses and obtain confidence intervals for the variance of a normally distributed variable
References in periodicals archive ?
From the results of Pearson Chi-squared test, it can be interpreted that the factors significantly affecting the occurrence of surgical site infections are alkaline phosphate levels above 150 IU/L, body mass index less than 17.
Chi-Squared values and probabilities of goodness of fit of segregation ratios of F2 and backcross generations are shown in Table 3.
RxC chi-squared tests were employed to compare the distributions of genotypes and alleles in each STR.
Chi-squared goodness of fit tests with applications.
Small-sample comparisons of exact levels for the Chi-squared goodness-of-fit statistics.
The following is Yates's corrected version of Pearson's chi-squared statistic:
96, where [chi square] is the reduced chi-squared value.
The data were analyzed according to the chi-squared ([chi square]) test.
A chi-squared test for independence was used to compare the percent of yellow, green, and brown leaves for the broccoli and lettuce seedlings for each extract.
A comparison of some continuity corrections for the chi-squared test on 2 x 2 tables.
The main statistical technique used is chi-squared analysis, which permits the analyst to determine the significance of the deviations of a set of numbers from their expected values.