PART $2$

As her next step, Rina is going to interpret the results of her calculations. To make sure that she has a comfortable retirement, she has decided that she would like to have her money grow at an average of $15$ percent or greater each year.

Q$.$

Use the average values you calculated to determine which funds will average equal to or greater than $15$ percent return on investment per year.

PART $3$

Rina has narrowed her list to those funds averaging a $15$ percent or greater return on investment per year. That still leaves her with several to choose from. Remembering that some of the funds are riskier than others, Rina is quick to realize that in some years she may not make $15$ percent or more. She may add $25$ percent or higher to her total amount of pension, or she may lose $5$ percent of her pension. An average value doesn't guarantee that she will make exactly $15$ percent a year. An average reflects how well she will do when all of the good years $($gains$)$ and bad years $($losses$)$ are combined.

Rina has $20$ years to work before she retires. While this gives her some time to increase her wealth, she is concerned that a few bad years could significantly lower the amount of money that she will retire with. To find the funds that have high gains or high losses, she turns her attention to the study of the range and standard deviation.

Q$.$

Calculate the range and standard deviation associated with each of the funds and market indicators with an average of $15$ percent or greater return on investment.