Step $5.$

Cut and paste the data step from STEP$4$ below the dashed line.

Change the data set to STEP$5.$

Delete the if$-$then re$-$initialization statement $($for DXGRP$3)$ that appears after the OUTPUT statement.

Where else could you place a statement to re$-$initialize DXGRP$3$ to get the same results

as in Step$4?$ Test your code and view the data set in Explorer to see that it works,

and use a PROC FREQ to show the same frequencies.