Waiting times (in minutes) of customers at Jefferson Valley Bank (where all customers enter single waiting line) and bank of Providence (where customers wait in individuals lines at 3 different teller windows) are listed below. Find out whether there is the difference between the two data sets that isn't apparent from the comparison of determine of center. If so, what is it?
6.5 6.6 6.7 6.8 7.1 7.3 7.4 7.7 7.7 7.7
4.2 5.4 5.8 6.2 6.7 7.7 7.7 8.5 9.3 10.0