chi-square test

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chi-square test

 
a statistical procedure for determining significant differences between frequencies observed within the data and frequencies that were expected. There are two chi-squared tests: the chi-square test of independence, which tests whether two or more series of frequencies are independent of one another; and the chi-square test of goodness of fit, which tests whether an observed frequency distribution fits a specified theoretical model. Written also χ2-test.

chi-square test

a statistical method of assessing the significance of a difference, as when the data from two or more samples, such as the numbers of females and males attending each of two colleges, are represented by a discrete number.
Synonym(s): χ2 test
References in periodicals archive ?
Chi-square test of independence for two nominal variables
The low value 001 of Chi-square test clearly indicates that there is significant relationship between learning opportunities for women for career advancement and gender.
Using a Wald chi-square test conducted in association with the Cox proportional hazards model controlling for ISS and amputation location, we concluded that time between amputation and discharge did not differ significantly between servicemembers with and without a recorded TBI (Wald 1-DOF [chi square] = 2.
MAJ Hout states that the Chi-square test is inappropriate for these data.
A chi-square test of independence found a dependency between performance on the 2008 general reading test and performance on the 2009 AA-MAS reading test, [chi square](1) = 14.
The frequency of perch events at different heights by four dragonfly species, and chi-square tests comparing these distributions against even distributions of no preference.
0]) for the 4 x 4 chi-square test of product type and firm location was the following: the proportions of companies manufacturing furniture, cabinets, architectural millwork, or a combination of the above that responded to the survey were the same for the four geographic regions.
After analysed by t-tests or chi-square tests, deceased wrestlers had higher body mass indexes with statistical significance as well as higher winning percentages, won more performance prizes (performance prizes in sumo are given out for outstanding performance, fighting-spirit, or technique) in their careers, and more were ranked higher.
A chi-square test was performed to determine the significance of the relationship between self-esteem and smoking behaviors.
Also, the three tables include the results from the Chi-square tests, which examined the differences in the number of cases between the 1980s and the 1990s.