## FIRST. and LAST. Variables in SAS – Data Step Processing in By Groups

1. Objective Today we will be looking at what is the use of FIRST. And LAST. variable in SAS programming Language. Moreover, we will discuss working of First. and Last. Variables in SAS and how to select SAS First. Variable. At last, we study how to select Last. variables in SAS and calculate cumulative score by group. So let’s start with First. and Last. Variables in SAS. 2. What is FIRST. & LAST. Variables in SAS Anytime we wish to group […]