The following is a set of data from a sample of n - 7:
12 7 4 9 0 7 3
a. Compute the first quartile (Q1), the third quartile (Q3), and the interquartile range.
b. List the five-number summary.
c. Construct a box plot and describe its shape.
d. Compare your answer in (c) with that from Problem 3.3 (d) on page 120. Discuss.