Problem
Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample data. Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? \[ \begin{array}{lllllllllll} 40 & 39 & 38 & 32 & 20 & 16 & 14 & 10 & 9.8 & 9.2 & \text { 무 } \end{array} \] The range of the sample data is $\$ \square$ million. (Type an integer or a decimal.)
Solution
Step 1 ：The range of a set of data is the difference between the highest and lowest values in the set.
Step 2 ：In this case, the highest value is 40 and the lowest value is 9.2.
Step 3 ：So, the range is 40 - 9.2 = 30.8.
Step 4 ：Final Answer: The range of the sample data is \(\boxed{30.8}\) million.
