Which Statement Is TRUE Concerning a Coefficient of Correlation

question 81

Multiple Choice

Which statement is TRUE concerning a coefficient of correlation?

• A) A correlation coefficient is an index of the causal relationship between two variables.
• B) A correlation coefficient may be useful in prediction.
• C) It covaries with the standard deviation.
• D) It came about as a result of someone asking Francis Galton what his "sign" was.

---

Definitions:

Product Line Extension

A strategy where a company introduces additional items in the same product category under the same brand name to increase variety and reach.

Safety-Coated

refers to items that have been covered with a material to reduce or eliminate the risk of harm or injury.

Extra-Strength

Referring to a product or medication designed with a higher potency or effectiveness compared to the regular strength.

Brand Extension

A strategy where a company uses an existing brand name to launch a product in a different category, leveraging the brand's equity to enter new markets.