Answer:
a. the mean differences among the levels of one factor
Step-by-step explanation:
In statistics, a two-way analysis of variance (ANOVA), a main effect is defined as the mean differences among the levels of one factor.
The aim of a two-way analysis of variance (ANOVA) is to give the relationship or identify if there is an interaction between the two independent variables on the dependent variable.
Jessica and Robin have been together for 22 days.

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is always greater than
. And it's greater
times.

Answer:
{x,y} = {1,6} Have a great day