Given the Least Squares Regression Line $\tilde { y } = - 2.48 + 1.63 x$

question 222

Multiple Choice

Given the least squares regression line $\tilde { y } = - 2.48 + 1.63 x$ , and a coefficient of determination of 0.81, the coefficient of correlation is:

• A)-0.66
• B)0.81
• C)-0.90
• D)0.90

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Definitions:

Savings Account

A deposit account held at a bank or other financial institution that provides principal security and a modest interest rate.

Economic Profit

The difference between total revenue and total costs, including both explicit and implicit costs, indicating the efficiency with which a company utilizes its resources.

Explicit Costs

are direct, out-of-pocket payments for expenses incurred by a business or individual.

Revenues

The total income generated by a company or organization from its activities, before any expenses are subtracted.