www.gusucode.com > stats 源码程序 matlab案例代码 > stats/TestGroupedDataforEqualVariancesExample.m
%% Test Grouped Data for Equal Variances %% % Load the sample data. load carsmall %% % Test the null hypothesis that the variances in miles per gallon (|MPG|) % are equal across different model years. vartestn(MPG,Model_Year) %% % The high $p$-value, |p = 0.83269|, indicates that |vartestn| does not % reject the null hypothesis that the variances in miles per gallon (|MPG|) % are equal across different model years.