Dorothy Conducted an Experiment in Which There Was a 20

question 49

Multiple Choice

Dorothy conducted an experiment in which there was a 20 point difference between the experimental and control group.The statistical test suggests that this result did not occur simply by chance.Dorothy's results are said to have (found)

• A)statistical significance.
• B)practical significance.
• C)descriptive statistics.
• D)meta-analysis.

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Definitions:

Pearson Product-movement

A statistical technique, commonly referred to as Pearson's correlation coefficient, measuring the linear correlation between two sets of data.

Correlation Coefficient

A numerical measure that indicates the strength and direction of a linear relationship between two continuous variables.

Variables Relationship

The interaction or correlation between two or more variables, describing how changes in one variable are associated with changes in another.

Validity

The extent to which a test or tool measures what it is intended to measure, indicating the accuracy of the results.