The Mean of a Distribution of Scores Is the

question 25

Multiple Choice

The mean of a distribution of scores is the

• A) most frequently occurring score.
• B) arithmetic average of all the scores.
• C) least frequently occurring score.
• D) score exceeded by 50 percent of all the scores.

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Definitions:

P-Value

A statistical metric that helps you determine the significance of your research results, essentially telling you how likely your data would have occurred by random chance.

One-Tail Test

A statistical test where the region of rejection is on only one side of the sampling distribution, used when the research hypothesis predicts a direction of the effect.

Two-Tailed Test

A hypothesis testing approach that allows for the possibility of an effect in two directions, either higher or lower than the null hypothesis, and hence tests for the presence of any significant difference.

Test Statistic

A calculated value that is used in statistical tests to determine whether to reject the null hypothesis, based on sample data.