Reconsider the previous two exercises.
a. Produce a well-labeled segmented bar graph to display the association between party and sex of senator.
b. Does the graph reveal that there is an association between party and sex of senator in the 2014 U.S. Senate? If so, describe the association.

Data from previous question

The 2014 U.S. Senate consists of 80 men and 20 women. The 2014 U.S. Senate consists of 45 Republicans and 55 Democrats (counting 2 Independents as Democrats because they vote with Democrats more than with Republicans). What additional information do you need in order to produce a 2 × 2 table and investigate whether there is an association between sex and party?