I If the Coefficient of Correlation Is 0

question 43

Multiple Choice

i. If the coefficient of correlation is 0.80, what is the coefficient of determination? ii. What is a measure of the scatter of observed values around the regression line called?
iii. If the correlation between sales and advertising is + 0.6, what percent of the variation in sales can be attributed to advertising?

• A) 0.4; standard deviation; 0.3.
• B) 0.64; standard error of the estimate; 36%.
• C) 0.64; standard error of the estimate; 60%.
• D) 0.08; variation; 36%.
• E) 0.4; standard error of the estimate; 60%.

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Definitions:

Conflict

A situation or period of struggle or disagreement between people with opposing needs, beliefs, or interests.

Prolonged Period

Refers to a time span that extends longer than usual or expected.

Rousseau

Jean-Jacques Rousseau, a Genevan philosopher, writer, and composer of the 18th century, known for his influential thoughts on education and social contract theory.

Hobbes

An English philosopher, best known for his political philosophy that includes the social contract theory found in his work "Leviathan."