Run the following program to create a SAS data set called PROB2_5, containing variables X, Y,Z, and GROUP:
(a) Write the SAS statements to generate a frequency bar chart (histogram) for GROUP. You may use either the base SAS procedures or the SAS Graphic procedures to answer these questions,
(b) Write the SAS statements to generate a plot of Y versus X (with “y” on the vertical axis and” X II on the horizontal).
(c) Write the SAS statements to generate a separate plot of Y versus X for each value of the GROUP variables.