Find the range, mean and median for each of the two samples below, and then compare the two sets of results.
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?
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Jefferson Valley (single line):
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6.5
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6.6
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6.7
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6.8
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7.1
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7.3
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7.4
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7.7
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7.7
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7.7
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Providence (individual lines):
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4.2
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5.4
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5.8
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6.2
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6.7
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7.7
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7.7
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8.5
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9.3
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10.0
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