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:

Continuous Random Variables

Variables that can assume an infinite number of values within a given range.

Independent Events

Two or more events that have no influence on each other's occurrence, so that the probability of one event does not change the probability of another.

Sample Space

The set of all possible outcomes of a statistical experiment.

Internet

The Internet is a global network of computers that facilitates communication and information sharing across the world.