Research Methods II Exam 2 Vocab

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10 Terms

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Central Tendency

A representation of a typical score in a distribution

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Median

The middle score in a distribution, such that half of the score are above and half are below the middle value

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Mode

The most common score in a distribution

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Outlier

An extreme high or low score in a distribution

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Degrees of Freedom

The number of scores that can vary in the calculation of a statistic

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Discrete Variables

Measures with the whole number scores that cannot be subdivided into smaller units

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Interquartile Range

The difference between the scores that mark the middle 50% of a distribution

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Range

The difference between the highest and lowest scores in a distributionS

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Standard Deviation

A measure representing the average differences between the scores and the mean of a distribution

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Variance

The squared standard deviation of a distribution