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Maths

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If I have the mean and standard deviation of data how do I work out the percentage of data within 1,2,and 3 standard deviations of the mean?
:) any help would be much appreciated
thanks

  • Maths - ,

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores.

  • Maths - ,

    Thanks :)

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