Twenty-Eight Applicants Interested in Working for the Food Stamp Program

Short Answer

Twenty-eight applicants interested in working for the Food Stamp program took an examination designed to measure their aptitude for social work. A stem-and-leaf plot of the 28 scores appears below, where the first column is the count per branch, the second column is the stem value, and the remaining digits are the leaves.
a. What is the median score?
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b. What is the sample mean for this data set?
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c. What is the value of the sample standard deviation?
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d. What is the range of this data?
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