A sociologist is studying the age at which girls have their first child as a function of the parents' socioeconomic status (SES) and mother's religiosity. Here are the mean ages for girl's first child for each group:

a. What are the independent variables? What is the dependent variable?
b. How many main effects are possible? How many interaction effects are possible?
c. Is this design a_____way ANOVA or is it a_____x_____way ANOVA?
d. Draw the design as a tree diagram.
e. Graph the group means.
f. Create a table for the group means.
g. Do there appear to be any main effects? If so, for which independent variable(s)? Explain your decisions.
h. Do there appear to be any interaction effects? Explain your decision.

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Parents' SES Mother's Religiosity Age at Girl's First Child 16 19 19 20 20 23 24 24 27 Low Medium High Below average Below average Below average Average Average Average Above average Above average Above average Medium High Low Medium High