Explain how to construct a Pareto chart for the data in? Name two scientists who pioneered the SPC techniques and briefly mention their contributions? A factory quality control center measured...

Explain how to construct a Pareto chart for the data in?

Name two scientists who pioneered the SPC techniques and briefly mention their contributions?

A factory quality control center measured moisture contents in 160 packages and recorded sample mean, X, sample range, R, and standard deviation, s, respectively. Compute (a) the 3R chart UCL and LCL for the moisture sample mean and range values; (b) the 3X chart UCL and LCLs the moisture sample mean and range values?