Question

Developmental psychologists conducted a study to see how different treatments affected the age at which a child first walks. Children were randomly allocated to 4 different treatment groups, and their walking age (in months) was recorded. Here
are the sample statistics:

Group	Count	Mean	Variance
A	6	10.04	2.21
B	6	11.96	2.51
C	6	11.71	2.06
D	5	12.55	0.70
Overall	23	11.52	2.57

What is the sum of squares for treatment (between groups) for this experiment?

Answer 1