Lecture 5: Measures of Dispersion

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Last updated 2:50 AM on 9/20/26
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8 Terms

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dispersion

differences of values within a distribution

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range

low and high values of a distribution

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variance

general spread of values across a distribution

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standard deviation

averaged spread of values (square root of variance) (the average spread of a distribution from the mean)

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what does a higher SD mean?

greater dispersion of values

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outliers

unrepresentative and extreme values of a distribution; possibly affecting the mean and SD

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what happens when you only examine the mean?

get a wrong impression of central tendency

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what happens when you examine the mean and SD?

see more accurate spread of valeus