MEASURES OF DISPERSION


SAMPLE VARIANCE UNBIASED E(s 2 ) = ƒ 2 )

Note  

the latter form is preferred for computations since computations can be done "on-the-run" as data is acquired .

STANDARD DEVIATION (UNBIASED)

Recall

(a 2 ± b 2 ) 1/2 ‰  a ± b




Six Sigma and Beyond. Statistics and Probability
Six Sigma and Beyond: Statistics and Probability, Volume III
ISBN: 1574443127
EAN: 2147483647
Year: 2003
Pages: 252

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