Control Charts
range factors
range factors
difference of range
Lowess-Range-Chart
Plot Shewhart Control Charts
R Chart Parameters
Individuals Charts Parameters for Baseline RR Mean and Variability
xbar Chart Parameters
Computing xbar and R-chart Parameters
x-Chart Parameters
Computing x and LR-chart Parameters
Tools for creating and visualizing statistical process control charts. Control charts are used for monitoring measurement processes, such as those occurring in manufacturing. The objective is to monitor the history of such processes and flag outlying measurements: out-of-control signals. Montgomery, D. (2009, ISBN:978-0-470-16992-6) contains an extensive discussion of the methodology.