One of the major measures of the quality of service provided by an organization is the speed with which it responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a major expansion in the past several years. In particular, the flooring department had expanded from 2 installation crews to an installation supervisor, a measurer, and 15 installation crews. The business objective of the company was to reduce the time between when a complaint is received and when it is resolved. During a recent year, the company received 50 complaints concerning carpet installation. The data from the 50 complaints, organized in Furniture, represent the number of days between the receipt of a complaint and the resolution of the complaint:
- Compute the
mean ,median , firstquartile , and third quartile. - Compute the
range ,interquartile range , variance, standard deviation, and coefficient of variation. - Construct a boxplot. Are the data skewed? If so, how?
- On the basis of the results of (a) through (c), if you had to tell the president of the company how long a customer should expect to wait to have a complaint resolved, what would you say? Explain.
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