Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

What is a chi-square statistic?

April 26, 2017Chi-square statistic

0

Posted

What is a chi-square statistic?

1 Answer

0

Posted

A chi-square statistic is a statistic whose values are given by Χ2 = [ ( n – 1 ) * s2 ] / σ2 where σ is the standard deviation of the population, s is the standard deviation of the sample, and n is the sample size. The distribution of the chi-square statistic has n – 1 degrees of freedom. (For more on the chi-square statistic, see the tutorial on the chi-square distribution.