Question

segmented / stacked bar graph
a segmented bar graph is another variation of a bar graph that shows the relationship between two categorical variables. it more clearly shows the proportion of observations for the values of one variable.
compare and contrast side - by - side bar graphs and segmented bar graphs:
give one advantage to using a segmented bar graph

Explanation:

Side - by - side bar graphs show individual values for each category separately. Segmented bar graphs show proportions within categories. Advantage of segmented: clearly shows part - to - whole relationships.

Answer:

Comparison: Side - by - side shows individual values, segmented shows proportions. Advantage: Clearly shows part - to - whole relationships.