The data in < PROBLEMS > are random samples of the time (in minutes) taken to resolve 40 problems reported by students and 40 problems reported by staff to the Technology Services

(TS) Service Desk at Tasman University.

For each sample:

a. Construct appropriate tables and/or charts to investigate the time it takes the TS Service Desk to resolve problems.

b. Calculate the mean, median and quartiles.

c. Calculate the range, interquartile range, variance, standard deviation and coefficient of variation.

d. Construct a box-and-whisker plot. Are the data skewed? If so, how?

e. On the basis of the results of

(a) to (d), are there any differences between the time to resolve TS problems for staff and for students? Explain.