Range chart calculations

Range chart control limits are calculated as follows:

Range chart calculations

Control Limits calculated from

Control Limits calculated from
standard deviation (s ) are

NOTE: If subgroup size is variable, m is replaced with mi for ith subgroup limits. When subgroup size is variable, the control limit values will not be the same; therefore, the chart may display `city skyline' type control lines (when subgroup size is from 2 - 25).

Data Plot Items

Descriptive Statistics

See Also

Quality Chart Formula Reference

Range chart

Range chart properties

Configuring a Range chart

XBar-R chart

Moving Range chart