Homework Problem 20, Due Wednesday April 7.
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Hand in edited SAS code and portions of outputs (but 
NOT the data!) showing that you have accomplished the 
following tasks in SAS.

(i) Input and create and save a SAS dataset from the 
(compressed) ASCII dataset in the Data directory of the 
course web-page

http://www.math.umd.edu/~evs/s798c/Data/SASsales.asc.gz

The third and fourth columns ("Rep" and "Type") should be 
alphabetic (character)type data; the other columns should 
be numeric.

(ii) Using PROC TABULATE: find and display in an edited 
SAS-created output table the average amount sold by 
each Rep, by Qtr. That is, find and display in a SAS output 
table the average of all of the sales amounts (= Units*Price)
for each combination of (Qtr, Rep).

(iii) Using PROC SORT, PROC PRINT, and appropriate DATA 
steps, Print out the first 15 lines of the data for 
Standard units, and all of the data for Deluxe units, 
in each case sorted by Month and Rep.