The Appropriate Correlation Coefficient for Measuring the Direction and Strength

question 31

Multiple Choice

The appropriate correlation coefficient for measuring the direction and strength of the linear relationship between two ranked or ordinal variables is

• A)the Spearman correlation coefficient
• B)the point-biserial correlation coefficient
• C)the phi correlation coefficient
• D)none of the above

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Definitions:

Meta-analysis

A statistical technique that combines the results of multiple studies to identify patterns, discrepancies, or the overall effectiveness of a particular intervention.

Correlational Study

A research method that examines the relationship between two or more variables to determine if a change in one is associated with a change in the other(s), without necessarily proving causation.

Field Experiment

A research study conducted in a real-world setting, outside of the laboratory, to observe and measure natural behaviors.

Quasi-experiment

A research design that lacks the full control of a true experimental setup, often missing random assignment, used to estimate the causal impact of an intervention or treatment.