Question

Waiting times​ (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of​ data, then compare the variation.
Bank A​ (single line) Bank B​ (individual lines)

6.5 4.3
6.6 5.3
6.6 5.8
6.8 6.2
7.0 6.7
7.3 7.7
7.4 7.7
7.7 8.4
7.7 9.2
7.8 9.9

Answer 1

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