Free Online Lean Six Sigma Encyclopedia

English |  Español |  Français |  Português |  Deutsch |  中文

Log(s)

Go Back

Definition

The base 10 logarithm of the standard deviation of the sample data. The logarithm of the standard deviation is used to transform the data and to put it on a tighter scale that facilitates the Analysis of Variance. The Log(s) may be transformed further by multiplying by –10. This reverses the scale so that “bigger is better”. This measurement of dispersion is used to evaluate an experiment’s impact on response variability.