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Sagot :
A. The mean and the median for the data given are as follows:
- Mean: 36.2.
- Median: 33.
B. The measure of center that should be used is the median.
What is shown by the stem-and-leaf plots?
The stem-and-leaf plots shows each measure of the data-set, following the format of the key.
Considering the format of the key, the measures are given as follows:
15, 20, 22, 25, 32, 34, 45, 53, 56, 60.
The mean is given by the sum of all the elements divided by the number of elements, hence:
M = (15 + 20 + 22 + 25 + 32 + 34 + 45 + 53 + 56 + 60)/10
M = 36.2.
The median is the mean of the two middle elements of the data-set, hence it is given as follows:
Median = (32 + 34)/2 = 33.
As the measures are different, the median should be used, as it is not influence by outliers.
More can be learned about stem-and-leaf plots at https://brainly.com/question/8649311
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