If Cov(x,y)= 20 $s _ { x } ^ { 2 } = 16$

question 21

Multiple Choice

If cov(x,y) = 20, $s _ { x } ^ { 2 } = 16$ and $s _ { y } ^ { 2 } = 49$ then the sample coefficient of correlation r is:

• A) 1.400
• B) 0.026
• C) 0.714
• D) None of these choices.

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Definitions:

Output

The total amount of goods or services produced by a firm or economy over a specific period.

Isoquant

A curve in economic theory that represents all the combinations of inputs which produce the same level of output.

Isoquant

A curve that represents all the combinations of inputs that result in the production of a certain level of output.

Slope

In mathematics, it refers to the steepness or incline of a line, indicating the rate at which y-values change with respect to x-values.