2.67 Variability of net worth of billionaires Here is the five-number summary for the distribution of the

Question:

2.67 Variability of net worth of billionaires Here is the five-number summary for the distribution of the net worth

(in billions) of the Top 659 World’s Billionaires according to Forbes magazine.

Minimum = 2.9, Q1 = 3.6, Median = 4.8, Q3 = 8.2, Maximum = 79.2

a. About what proportion of billionaires have wealth (i)

greater than $3.6 billion and (ii) greater than $8.2 billion?

b. Between which two values are the middle 50% of the observations found?

c. Find the interquartile range. Interpret it.

d. Based on the summary, do you think that this distribution was bell shaped? If so, why? If not, why not, and what shape would you expect?

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