Question

each year, forbes magazine compiles a list of the 400 richest americans. as of september 19, 2012, 8 of the top 10 on the list are as shown in the accompanying table. determine the range and sample standard - deviation.
click the icon to view the table of 8 of the top 10 richest americans.
the range is $ billion.
(type an integer or a decimal. do not round.)
top 10 richest people in a country
person wealth ($ billions)
bill gates 66.0
warren buffett 46.0
larry ellison 41.0
charles koch 31.0
david koch 31.0
christy walton and family 27.9
jim walton 26.8
michael bloomberg 25.0

Explanation:

Step1: Find maximum and minimum values

The maximum wealth is $66.0$ billion (Bill Gates) and the minimum wealth is $25.0$ billion (Michael Bloomberg).

Step2: Calculate the range

The formula for the range is $R = \text{Max}-\text{Min}$. So, $R=66.0 - 25.0$.

Answer:

$41.0$