Because the statistic called the standard deviation measures the volatility of a variable, it is used to measure the return of a portfolio. a. true b. false

It is not true or false  because the statistic called the standard deviation measures the volatility of a variable, it is used to measure the return of a portfolio.

Standard deviation is a measure of the dispersion of a set of data from its mean. It is premeditated as the square root of variance by defining the variation among each data point relative to the mean.

In economics, standard deviation is a numerical measurement; when applied to the yearly rate of return of an asset, it sheds light on the historical volatility of that investment.

hi : ) i found this so i hope this !

"we first find value of tax in dollars.

the difference between the two prices   is: 23. 54 - 22 = 1.54

therefore the sales tax in dollars is 1.54

the tax % will be   (amount of tax / original cost price ) × 100

(1.54 / 22) × 100  → (0.07) × 100 =   7

so the tax rate is 7%

we can double check the answer.

7 % of 22   → (7/100) × 22 → 0.07 × 22 = 1.54

22 + 1.54 = 23.54"