A GROUP SEQUENTIAL PROCEDURE BASED ON GROUP OF PARTIAL VARIATES

摘要

In this study, we propose the group sequential procedure which tests the difference between two population mean vectors corresponding to group of partial variates sequentially. In a case study, we can find the significance difference at the 2nd group of partial variates with respect to the weather on two cities. Now we have to notice some points when we use the group sequential procedure. We must set up 5 steps at most as the maximum time of test in our procedure because it is usual to use 5 times at most as the maximum time of test in the group sequential test. Also the analysts should take care how to divide all the variates and select the number of group of partial variates.