Although 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)median chart
B)X chart
C)p chart
D)s chart
E)standard deviation chart

Question

Although  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)median chart 
B)X chart 
C)p chart 
D)s chart 
E)standard deviation chart

Quizplus · Accepted Answer

When it is too time consuming or inconvenient to compute subgroup averages, a median chart can be used instead. The median chart is a good choice because it is robust to outliers and does not require calculation of subgroup averages.

Although Charts Generally Are Preferred for Variables Data, Sometimes