Statistics Dictionary
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dictionary will display the definition, plus links to related web pages.
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Marginal Mean
In analysis of variance, a marginal mean is the mean of one
factor
at one
level
across all levels of other factors.
Below, a
two-way table
shows test scores for men and women from different regions of the country.
The mean scores displayed along the outside edges are marginal means.
|
East |
Central |
West |
Mean |
| Men |
2 |
10 |
8 |
6.67 |
| Women |
16 |
6 |
8 |
10 |
| Mean |
9 |
8 |
8 |
. . . |