For the sample data presented in the dotplot of Exercise 3.63, construct a frequency distribution in which

Question:

For the sample data presented in the dotplot of Exercise 3.63, construct a frequency in which the classes are 10€“under 20, 20€“under 30, and 30€“under 40. If this frequency were all that we knew about the underlying data, what approximate values would be estimated for the mean and standard deviation of these data?
In exercise 3.63

A computer and statistical software will be desirable and useful. However, any necessary calculations can also be done with the aid of a pocket calculator. For readers using statistical software, keep in mind the file-naming key€” for example, the data for Exercise 3.57 will be in data file XR03057.
In exercise

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...