In statistics, the 68–95–99.7 rule, also known as the empirical rule, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution:
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Empirical Rule Definition The empirical rule is the analysis of a data set to determine which values of data fall within 3 subsets of data. These subsets are 68%, 95%, and 99.7% of data. So for
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The empirical rule calculator (also a 68 95 99 rule calculator) is a tool for finding the ranges that are 1 standard deviation, 2 standard deviations, and 3 standard deviations from
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