Aptitude Tests Twenty-Eight Applicants Interested in Working in Community Services Took an Took

Essay

Aptitude Tests
Twenty-eight applicants interested in working in community services took an examination designed to measure their aptitude for social work. A stem-and-leaf plot of the 28 scores appears below, in which the first column is the count per "branch," the second column is the stem value, and the remaining digits are the leaves.
Count Stems Leaves
1 4 6
1 5 9
4 6 3688
6 7 026799
9 8 145667788
7 9 1234788
-Suppose you are given the following set of sample measurements: -1, 0, 2, 6, 5, and 6.
a. Calculate the sample mean.
b. Find the median.
c. Find the mode.
d. Are these data symmetric, skewed to the right or skewed to the left? Justify your answer.