Find the range mean and median for each of the two samples b

Find the range, mean and median for each of the two samples below, and then compare the two sets of results. [15]

Customer Waiting Times:

Waiting times (in minutes) of customers at the Jefferson Valley Bank (where all customers enter a single waiting line) and the Bank of Providence (where customers wait in individual lines at three different teller windows) are listed below. Determine whether there is a difference between the two data sets that is not apparent from a comparison of the measures of center. If so, what is it?

Jefferson Valley (single line):

6.5

6.6

6.7

6.8

7.1

7.3

7.4

7.7

7.7

7.7

Providence (individual lines):

4.2

5.4

5.8

6.2

6.7

7.7

7.7

8.5

9.3

10.0

Solution

Jefferson Valley

R= Highest value-Lowest value=5.8

Mean=7.15

Median=7.2

cv=25.47%

Providence

R=Highest value-Lowest value=1.2

mean=7.15

Median=7.2

cv=6.66%

The change wwe see in the two datasets is that the variations are different.