The Pearson Product-Moment Correlation Coefficient Is

question 19

Multiple Choice

The Pearson product-moment correlation coefficient is

• A) a statistic used to assess the direction and the size of the relationship between two variables.
• B) a statistic used to indicate the central tendency of descriptive data.
• C) a procedure used to create experimental manipulations.
• D) a statistic used to compare groups of individuals in experimental research.

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Definitions:

Statistics

Calculated numbers that summarize data and relationships among variables in a sample.

Z-score

A numerical measurement that describes a value's relationship to the mean of a group of values, expressed in terms of standard deviations from the mean.

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values.

Mean

A statistical measure representing the average value of a set of numbers, calculated by dividing the sum of all values by the count of values.