What is the chi-squared test? The chi-squared test, often written as χ 2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are ...

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 ...

The aim of this paper is to relate and extend some recent work on chi-square goodness-of-fit tests. There is no discussion of any problems which are specifically associated with more than one ...

Lecture Notes-Monograph Series, Vol. 36, State of the Art in Probability and Statistics (2001), pp. 399-418 (20 pages) We study soft threshold estimates of the non-centrality parameter ξ of a ...