AP Psychology: Science Practices - Set C

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7 Terms

1
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Central tendency

a number that describes something about the "average" score of a distribution (mean, median, mode)

<p>a number that describes something about the "average" score of a distribution (mean, median, mode)</p>
2
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Mean

the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores

<p>the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores</p>
3
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Median

the middle score in a distribution; half the scores are above it and half are below it

<p>the middle score in a distribution; half the scores are above it and half are below it</p>
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Mode

The value that occurs most frequently in a given data set.

<p>The value that occurs most frequently in a given data set.</p>
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Variation

the dispersion among data values (i.e., how far apart they are from each other)

<p>the dispersion among data values (i.e., how far apart they are from each other)</p>
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Percentile rank

the percentage of scores below a specific score in a distribution of scores

<p>the percentage of scores below a specific score in a distribution of scores</p>
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Range

the difference between the highest and lowest scores in a distribution

<p>the difference between the highest and lowest scores in a distribution</p>

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