What is the major benefit of using Xbar charts over Individuals charts?
OPTIONS
- The Average charts are not sensitive to non-normality
- The Average charts provide tighter controls
- Average charts best indicate within and between subgroup variation
- Average charts show mean shift
ANSWER
The Average charts provide tighter controls
EXPLANATION
The reason why Xbar charts are chosen over Individuals charts is because they offer tighter controls than the latter.
