Montgomery (1996) points out that a moving range chart should be interpreted with care because "the moving ranges are correlated, and this correlation may often induce a pattern or runs or cycles on ...

Each observation contains the diameter measurement and identification number for a particular engine. The variable ENGINE identifies the sequence of engines and is referred to as the subgroup-variable ...

Individuals and Moving Range Chart The individuals and moving range (I-MR) chart is one of the most common control charts for continuous data. It is applicable for a single data point over points in ...