I just wanted to make sure whether I understand it correctly. The Statistical Testing chapter of the book says that matched sample t-tests are recommended for comparing levels within attributes.
So for example, if I have the attribute price and three levels (low, medium, high), than I would do the following t-tests:
1. low - medium
2. low - high
3. medium - high
Would that be correct?
Also, it only makes sense to compare levels of the same attribute, doesn't it?