In an Effort to Provide More Consistent Customer Service, the Manager

Essay

In an effort to provide more consistent customer service, the manager of a local fast-food restaurant would like to know the dispersion of customer service times in relation to their average value for the facility's drive-up window. The table below provides summary measures for the customer service times (in minutes) for a sample of 50 customers collected over the past week.
-Interpret the variance and standard deviation of this sample.