Waiting times (in minutes) of customers at a bank where all customers enter a si
ID: 3170652 • Letter: W
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): 6.5 6.6 6.7 6.9 7.1 7.2 7.3 7.7 7.7 7.8
Bank B (individual lines): 4.4 5.4 5.8 6.1 6.7 7.7 7.7 8.4 9.2 9.9
The coefficient of variation for the waiting times at Bank A is ___ %
The coefficient of variation for the waiting times at Bank B is ___ %
Is there a way to get this calculation via TI-83 Pluse... Please let me know.
Explanation / Answer
coefficient of variation for the waiting times at Bank A is =6.325%
coefficient of variation for the waiting times at Bank B is =23.335%
below is the link to do that on TI-83
https://www.youtube.com/watch?v=qJOOr2pjCIk
Bank A Bank B 6.5 4.4 6.6 5.4 6.7 5.8 6.9 6.1 7.1 6.7 7.2 7.7 7.3 7.7 7.7 8.4 7.7 9.2 7.8 9.9 mean 7.15 7.13 std deviation 0.452 1.664 COV=(std deviation/mean)*100 6.325 23.335Related Questions
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