The chi-square test is a statistical hypothesis test that is used to compare observed and expected counts in a contingency table. Its uses include: tests for independence, tests for homogeneity, and ...

A chi-square (χ2) statistic is a test that is used to measure how expectations compare to actual observed data or model results.

In this paper a new method is proposed for grouping a sample or a population of observations of a continuous statistical variable which presents good properties. By the new method it is possible to ...

The chi-square goodness-of-fit test examines whether the children's hair color has a specified multinomial distribution for two regions. The hypothesized distribution for hair color is 30 percent fair ...

Subsequently, Stein's method for chi-square approximation is applied to bound the distributional distance between Pearson's statistic and its limiting chi-square distribution, measured using smooth ...