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. Z-scores: x Z-=...
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- Spring '08
- Standard Deviation, Mean, standard deviations, 68%, Frequency Relative Frequency, Relative frequency table