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Unformatted text preview: X M = X n + 1 ( ) 2 X M = X n 2 + X n 2 ( )+ 1 ( ) /2 FORMULAE Tchebysheff's (Chebyshev's) theorem: ρ = 1 − 1 k 2 Grouped Data: Mean: X = f i M i i = 1 k ∑ n Variance: S 2 = f i M i − x ( ) 2 ∑ n − 1 Midpoint: Empirical Rule: 689599.73% Rule Class Midpoint = beginning class endpoint +ending class endpoint 2 Class Midpoint = class beginning point + 1 2 class width...
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This note was uploaded on 06/01/2009 for the course QMST 2333 taught by Professor Mendez during the Spring '08 term at Texas State.
 Spring '08
 Mendez

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