Which of the Following Is True of Correlations

question 23

Multiple Choice

Which of the following is true of correlations?

• A)They cannot be used to determine statistical significance.
• B)They provide the basis for transforming observations to scales.
• C)They are particularly useful with nominal scales.
• D)They describe the direction and magnitude of relationships between two variables.

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Definitions:

Sample Size

The number of observations or data points collected in a study or used in a statistical sample.

Null Hypothesis

The default statement in hypothesis testing that there is no effect or no difference, and any observed effect is due to chance.

Alpha

Often used to denote the level of significance in hypothesis testing, typically set at 0.05.

Likelihood

A measure of the probability that an observed set of data would occur under a particular statistical model or hypothesis.