Stat & Prob Formula Sheet

Stat & Prob Formula Sheet - Probability and Statistics...

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Unformatted text preview: Probability and Statistics Probability and Statistics Formula Sheet Formula Sheet I. Descriptive Statistics Sample Mean Sample Mean Depth of Median Midrange Range (List of Data) (Freq. Distrib.) x x n ∑ = xf x f ∑ = ∑ 1 ( ) 2 n d x + = 2 H L Midrange + = R H L =- Sample Variance Pop. Variance Sample St. Deviation Pop. St. Deviation (List of Data) (List of Data) (List of Data) (List of Data) ( 29 2 2 1 x x s n- ∑ =- ( 29 2 2 x N μ σ- ∑ = ( 29 2 1 x x s n- ∑ =- ( 29 2 x N μ σ- ∑ = Variance St. Deviation (Grouped Data) (Grouped Data) ( 29 2 2 2 1 m m f x f x n s n ⋅ ∑ ⋅- ∑ =- ( 29 2 2 1 m m f x f x n s n ⋅ ∑ ⋅- ∑ =- Chebyshev’s Standard Score Percentile of a Piece of Data k th Percentile Interquartile Theorem z-score Range 2 1 1 atleast k- x z μ σ- = number of valuesbelow +0.5 percentile= 100 totalnumberof values ⋅ 100 k nk P = 3 1 IQR Q Q =- II. Probability Permutation Rule: The arrangement of...
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This note was uploaded on 10/22/2009 for the course STAT 421 taught by Professor Wang during the Fall '09 term at N.C. State.

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Stat & Prob Formula Sheet - Probability and Statistics...

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