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The mean plus or minus one standard deviation defines the ________ percent probability range of a normal distribution. 82 68 95 50 90
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The mean plus or minus one standard deviation defines the ________ percent probability range of a normal distribution. 82 68 95 50 90

User Kheyse
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This is the "empirical rule."  Approx. 68% of a data set lie within one standard deviation of the mean.
User Jturcotte
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