formula sheet test 1

# formula sheet test 1 - X M = X n 1 2 X M = X n 2 X n 2 1/2...

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FORMULAE Sturgess’ Rule: k = 1 + 3.3 × log n ( ) Interval width: i max X ( ) min X ( ) k Population Mean: μ = X N Sample Mean: X = X n Median: odd # obs.: Even # obs.: Weighted Mean: X w = wX ( ) w MAD: MAD = x i x n Population Variance: σ 2 = X ( ) 2 N Population Standard Deviation: = X ( ) 2 N ; = 2 Sample Variance: s 2 = X X ( ) 2 n 1 Sample Standard Deviation: s = X X ( ) 2 n 1 ; s = s 2 Location of percentile: L p = n ( ) P 100 Coefficient of Skewness: sk = 3 X X M ( ) s Coefficient of Variation: CV = s x

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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: 68-95-99.73% 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.

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formula sheet test 1 - X M = X n 1 2 X M = X n 2 X n 2 1/2...

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