1. Identify each variable as qualitative or quantitative discrete or quantitative continuous:

(a) Number of MacBooks sold during a boxing day sale

(b) The brand of the phone a person has

(c) Time required to finish an examination

(d) breed of the dog

2. The following data are the ages of 30 students attending a night course at the University of

Regina

23 25 24 29 22 19 19 38 32 40 41 26 43 31 49 20 30 42 25 44 22 53 47 36 39 31 24 54 23 27

a) Construct a stem and leaf plot for this data

b) Construct a relative frequency histogram for this data

3. Below are the ages of members of the Regina Flying Club.

29 38 34 55 63 75 48 32 46 45 50 58 20 33 32 53 64 64 44 50 32 37 40 48 39 51 42 31 24

a) Find the mean, median, mode, range, sample variance, and sample standard deviation for

this data. Describe the shape of the distribution.

b) Construct a box and whisker plot for this data. Is there any outlier(s)?

4. The age of 16 selected first-year students at the University of Regina are:

18, 19, 19, 20, 19, 18, 24, 25, 22, 19, 20, 20, 19, 28, 20, 32

Find the interquartile range, five-number summary, and sketch a box and whisker plot for the

data. Find if there are any outlier(s)?