The sales manager for the Fox News TV station affiliate in a southern Florida city recently surveyed 20 advertisers and asked each one to rate the service of the station on the following scale:

Very Good Good Fair Poor Very Poor 1 2 3 4 5 He also tracked the general time slot when the advertiser’s commercials were shown on the station.

The following codes were used:

1  morning 2  afternoon 3  evening 4  various times Rating Time Slot Rating Time Slot 2 1 4 3 1 1 2 2 3 3 3 3 2 1 3 3 1 1 2 1 4 4 1 1 2 2 1 1 1 1 5 3 2 1 2 4 2 2 3 4

a. Construct separate relative frequency distributions for each of the two variables.

b. Construct a joint frequency distribution for these two variables.

c. Construct a joint relative frequency distribution for these two variables. Write a short paragraph describing what the data imply.