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Descriptive Statistics

1) The following data are the number of calls 20 customer support reps took in 1 hour;
10, 15, 15, 18, 20, 21, 22, 24, 24, 25, 26, 26, 26, 28, 30, 31, 33, 38, 40, 42

a) Find the Median
b) Find the Mean
c) Midrange
d) Find the Mode
e) Find the Range
f) Draw a stem and leaf display of the task performance times above.

Solution Preview

See the attached file.

The stem-and-leaf chart is:

1| 0, 5, 5, 8
2| 0, 1, 2, 4, 4, 5, 6, 6, 6, 8
3| 0, 1, 3, 8
4| 0, 2

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1) The following data are the number of calls 20 customer support reps took in 1 hour;
10, 15, 15, 18, 20, 21, 22, 24, 24, 25, 26, 26, 26, 28, 30, 31, 33, 38, 40, 42

a) Find the Median      

The median is the "middle" number. The data is already sorted for us -- if there were an odd number of calls, the "middle" would be easy. However, with an even number of calls, we need to find ...

Solution Summary

The solution assists with finding median, mean, mid-range, mode, range; make stem and leaf chart.

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