For the Following Frequency Distribution (Assume the Data Represent a Population)

question 51

Essay

For the following frequency distribution (assume the data represent a population), $$\begin{array} { l r } \text { Class } & \text { Frequency } \\70 - 79 & 5 \\80 - 89 & 9 \\90 - 99 & 11 \\100 - 109 & 9 \\110 - 119 & 6\end{array}$$ ​
a.
Compute the mean.
b.
Compute the standard deviation.

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Definitions:

Current Benefit Amounts

Refers to the present value or amount of benefits, such as pensions or insurance payouts, that are payable to beneficiaries.

Future Salary Amounts

Projections or estimates of salary payments to be made in the future, often used for budgeting or compensation planning.

Beginning Balance

The amount of money in an account at the start of a new financial period.

Plan Assets

Assets that are held by a retirement plan, pension scheme, or other fund that are specifically set aside to pay retirees or fund future retirements.