One of the major measures of the quality of service provided by any organisation is the speed with which the organisation responds to customer complaints. A large family-owned department store selling...

One of the major measures of the quality of service provided by any organisation is the speed with which the organisation responds to customer complaints. A large family-owned department store selling furniture and flooring, including carpet, has undergone major expansion in the past few years. In particular, the flooring department has expanded from two installation crews to an installation supervisor, a measurer and 15 installation crews. During a recent year the company got 50 complaints about carpet installation. The following data represent the number of days between receipt of the complaint and resolution of the complaint. a. Construct frequency and percentage distributions (1 mark). b. Construct a percentage polygons (1 mark). c. Construct a cumulative percentage distribution and plot the corresponding ogive (1 mark). d. Calculate the mean, median, first quartile and third quartile (2 marks). e. Calculate the range, interquartile range, variance, standard deviation and coefficient of variation (3 marks). f. Construct a box-and-whisker plot. Are the data skewed? If so, how (2 marks)?