Which of the Following Statements Is TRUE Concerning a Correlation

question 75

Multiple Choice

Which of the following statements is TRUE concerning a correlation coefficient?

• A) A restricted range in either correlated variable makes the correlation lower.
• B) A correlation coefficient provides information regarding causation.
• C) No meaning is attached to the sign of a correlation coefficient, since the coefficient is ultimately squared.
• D) Restriction of range is now illegal in the 48 contiguous states.

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Definitions:

Type II Error

A Type II Error occurs in hypothesis testing when a false null hypothesis is not rejected, meaning a real effect or difference was missed.

Null Hypothesis

A statement used in statistics that suggests there is no significant difference or effect, serving as the default assumption to be tested.

Type I Error

The error of rejecting the null hypothesis when it is true, often referred to as a "false positive."

Confidence Interval

An interval of values, pulled from a sample's statistics, with a good chance of containing the elusive value of a population parameter.