In the frequency distribution in Example 9, 599.5 was chosen as the midpoint for the class of

Question:

In the frequency distribution in Example 9, 599.5 was chosen as the midpoint for the class of $500 or more. How does the sample mean and standard deviation change when the midpoint of this class is 650?

a. Write the first four columns of a frequency distribution.

b. Find the sample mean.

c. Complete the last three columns of the frequency distribution.

d. Find the sample standard deviation.

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...