How to perform chowtest with Stata

1. install chowtest
Enter the command ：ssc install chowtest
2. Check usage
Enter the command ：help chowtest
3. Analyze
According to the help document, we can see that chowtest The command structure we used in the analysis is ：
chowtest The dependent variable The independent variables 1 The independent variables 2 The independent variables 3,group( Grouping variables )