Copy and paste your proc FREQ step from part $($a$)$ to the bottom of your program. Modify the new PROC FREQ step by limiting the park types to the three that were determined in the previous step. In addition to suppressing the display of column percentages, display the table using the CROSSLIST option. Add a frequency plot that groups the bars by the row variable, displays row percentages, and has a horizontal orientation. Use Selected Park Types by Region as the report title. Run the program and review the results.

Note: Use SAS documentation to learn how the GROUPBY$=,$ SCALE$=,$ and ORIENT$=$ options can be used to control the appearance of the plot.