Question: A developmental psychologist is examining the development of lnguage skills from age 2 to age 5. Four different groups of children are obtained, one for each age, with n=15 children in each group. Ech child is given a language assessment test. The resulting data were analyzed with an ANOVA to test for mean differences between age groups. The results of the ANOVA are presented in the following table.

Fill in the missing values

Source SS df MS

Between treatments 81 ? ? F= ?

Within Treatments ? ? ?