Unformatted text preview: data will lie within K standard deviations from the mean: Chebyshev’s Theorem: The proportion of any set of data lying within K standard deviations of the mean is always at least 2 1 1 K, where K > 1. Note: UL K μ σ= Empirical Rule Approximately 68% of the data lies within 1 standard deviation of the mean. Approximately 95% of the data lies within 2 standard deviations of the mean. Approximately 99.7% of the data lies within 3 standard deviations of the mean. Zscores: x Z=...
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 Winter '08
 STAFF
 Standard Deviation, Mean, relative frequency, standard deviations, Relative frequency table

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