Chapter R, Problem 1.38RE

Global500 2014 Here is a stem-and-leaf display showing profits (in $M) for 30 of the 500 largest global corporations (as measured by revenue). The stems are split; each stem represents a span of 5000 ($M), from a profit of 43,000 ($M) to a loss of 7000 ($M). Use the stem-and-leaf to answer the questions.

1. a) Find the 5-number summary.
2. b) Draw a boxplot for these data.
3. c) Find the mean and standard deviation.
4. d) Describe the distribution of profits for these corporations.