If the Coefficient of Correlation Is −0

question 229

True/False

If the coefficient of correlation is −0.81,then the percentage of the variation in y that is explained by the regression line is 81%.

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Definitions:

Comparative Advantage

The ability of an individual or group to carry out a particular economic activity (such as producing a specific good) more efficiently than another activity.

Tractors

Heavy-duty vehicles designed primarily for farming tasks, including plowing, tilling, and planting fields.

Motorcycles

Two-wheeled vehicles powered by an engine, offering a form of transportation or recreation for riders.

Comparative Advantage

The ability of an individual, firm, or country to produce a good or service at a lower opportunity cost than others.