Determine what percentage of your data is within 2 standard deviations of the mean. (Show your calculations). How does this seem to compare with the 68-95 99.7 rule?
Determine what percentage of your data is within 2 standard deviations of
the mean. (Show your calculations). How does this seem to compare with the 68-95
99.7 rule?
The Empirical Ruel:
It is a simple method to find the percentage of the normal distribution for certain values. Commonly, 3 percentages are found that 68%, 95%, 99.7%, for the standard deviation of the mean with 1,2,3 respectively.
That is, 1 standard deviation distance from the mean gives about 68% of the distribution,
2 standard deviations distance from the mean gives about 95% of the distribution,
3 standard deviations distance from the mean gives about 99.7% of the distribution.
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