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Variation measures
    Calculates basic variation measures.
 
n ≤ …   (Run the sample case.) No. of data (sample size). •
L Lower specification limit. •
Observed
data
    The classical measures of central tendency and dispersion are calculated, as well as (dimensionless) skewness and kurtosis (matching Excel results).  The formulas are the following.
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References:

• Kazmierski, Thomas J., 1995, "Statistical Problem Solving in Quality Engineering", McGraw-Hill, Inc., New York, NY (pp 48 ff)

• Guimarães, Rui C. and José A. Sarsfield Cabral, 1997, «Estatística», McGraw-Hill, Lisboa (pp 40–46).

 
 
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Created: 2003-08-25 — Last modified: 2007-10-06