State-by-State A group of items are categorized according to a certain attribute—X, Y, Z—and according to the state in which they are produced:
| X | Y | Z |
New York | 20 | 5 | 5 |
California | 10 | 10 | 5 |
a. Create a comparative (side-by-side) bar chart to compare the numbers of items of each type made in California and New York.
b. Create a stacked bar chart to compare the numbers of items of each type made in the two states.
c. Which of the two types of presentation in parts a and b is more easily understood? Explain.
d. What other graphical methods could you use to describe the data?
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