You are given the following list of numbers,
1, 2, 3, 4, 5, 6, 7, 8, 9.
(1) Find the 5-number
summary (min, Q1, Q2, Q3, max).
(2) Find the interquartile range (IQR).
(3) Find the lower inner fence and upper inner fence.
(4) How will you use the answers to part (3) to tell
if a given number is an outlier?