Randomly survey 30 classmates about the number of pairs of shoes they own.

Record their values.

a. Construct a histogram. Make five to six intervals. Sketch the graph and

scale the axes.

b. What is the suitable measure to identify the spread of the data, and

calculate its value?

c. What is the average shoe size of your class?

d. Are the data discrete or continuous? How do you know?

e. In complete sentences, describe the shape of the histogram.

f. Who has the least shoe size, and highest shoe size?

g. What is the most frequently occurred shoe size?