Although $\bar{x}$ Charts Generally Are Preferred for Variables Data, Sometimes It Is

Multiple Choice

Although $\bar{x}$ charts generally are preferred for variables data, sometimes it is too time consuming or inconvenient to compute subgroup averages. In these cases, a(n) ________ is used.

A) $\bar{x}$ chart
B) X chart
C) p chart
D) s chart
E) R chart