If you are comparing subgroups of a data set, how can you determine if the variance between subgroups is significant?

1 Answer
Jul 22, 2016

hypothesis testing using #chi^2#.

Explanation:

hypothesis testing using #chi^2#.

The null hypothesis is #sigma_1^2 = sigma_2^2#
The alternate is #sigma_1^2 != sigma_2^2#

The test statistic is #t=sigma_1^2/sigma_2^2#. The more we deviate from 1 the more likely we are to reject the null.