Content deleted Content added
m WP:CHECKWIKI error 37|88|6|61 fixes + general fixes using AWB (7832) |
|||
Line 131:
Comparisons, which are most commonly planned, can be either simple or compound. Simple comparisons compare one group mean with one other group mean. Compound comparisons typically compare two sets of groups means where one set has two or more groups (e.g., compare average group means of group A, B and C with group D). Comparisons can also look at tests of trend, such as linear and quadratic relationships, when the independent variable involves ordered levels.
==Study designs and
There are several types of ANOVA. Many statisticians base ANOVA on the [[experimental design|design of the experiment]],{{Citation needed|date=May 2011}} especially on the protocol that specifies the [[random assignment]] of treatments to subjects; the protocol's description of the assignment mechanism should include a specification of the structure of the treatments and of any [[blocking (statistics)|blocking]]. It is also common to apply ANOVA to observational data using an appropriate statistical model.{{Citation needed|date=May 2011}}
| |||