Answer:
- Non-graduates
- Graduates: 35; Non-graduates: 30
- Graduates
Explanation:
You want to compare various statistics related to Graduates and Non-graduates based on the given stem-and-leaf plot.
In the 40s
The number of responses in the 40s can be found by counting the leaves that have a stem of 4:
Graduates: 6
Non-graduates: 8
More Non-graduates had responses in the 40s.
Range
The range for each group is found by subtracting the minimum value from the maximum:
Graduates: 56 -21 = 35
Non-graduates: 53 -23 = 30
Median
The median of the group of 17 Graduates is the 9th element in the list, 41.
The median of the group of 18 Non-graduates is the average of the 9th and 10th elements in the list:
(39+40)/2 = 39.5 . . . . . . less than 41
Graduates had the greater median number of hours.
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