The choice of class boundaries for a histogram or stemplot may cause data to be presented in different ways. For example, the following stemplot presents a unimodal symmetric distribution.
1 | 9
2 | 3 6 8
3 | 1 2 4 5
4 | 1 1 2 6 9
5 | 1 1 2 6 7 9
6 | 2 3 4 5 8
7 | 6 7 7 8
8 | 2 3 4
9 | 3

Question

The choice of class boundaries for a histogram or stemplot may cause data to be presented in different ways. For example, the following stemplot presents a unimodal symmetric distribution.
1 | 9
2 | 3 6 8
3 | 1 2 4 5
4 | 1 1 2 6 9
5 | 1 1 2 6 7 9
6 | 2 3 4 5 8
7 | 6 7 7 8
8 | 2 3 4 
9 | 3

anonymous · Answer

Which class boundary choice below would cause a histogram of these data to present the appearance of a uniform distribution?

anonymous · Answer

A. 10-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79 
   B. 16-35, 36-55, 56-75,76-94 
   C. 19, 20, 21, ? , 71, 72, 73 
   D. 16-20, 21-25, 26-30, 31-35, 36-40, 41-45, 46-50, 51-55, 56-60, 61-65, 66-70, 71-75 
   E. 1-50, 51-100

anonymous · Answer

B.

Because:
There would be an equal number in each category.