Chapter 13, Problem 9SE

Geometric Mean

Find the geometric mean for the numbers $$135,240,1000,\text{ and }25,000$$by following these steps:

a. Find the log (base 10) of each number:

$$135,240,1000,25,000$$

b. Average those four logs.

c. Find the antilog of the average by raising 10 to the number obtained in part b. The result is the

geometric mean. You may round it to the nearest whole number.

d. Find the mean and median of the original four numbers, and then write the values for the

geometric mean, the mean, and the median from smallest on the left to largest on the right.