If the Standard Deviation of X Is 15,the Covariance of X

question 44

True/False

If the standard deviation of X is 15,the covariance of X and Y is 94.5,the coefficient of correlation r = 0.90,then the variance of Y is 7.0.

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Definitions:

Population

The total number of people inhabiting a specific area or region.

Generation

A group of individuals born and living around the same time, sharing similar cultural experiences or characteristics.

Present Value

Present value is the current value of a future sum of money or stream of cash flows given a specified rate of return, reflecting the time value of money.

Future Value

The value of an investment or cash flow at a specified future date, calculated by applying expected rates of return or interest rates.