=+age (in months) when the children first walked are shown in the accompanying table. Also given is the ANOVA table, obtained from the SPSS computer package.

Age n Total Treatment 1 9.00 9.50 9.75 6 60.75 10.00 13.00 9.50 Treatment 2 11.00 10.00 10.00 6 68.25 11.75 10.50 15.00 Treatment 3 11.50 12.00 9.00 6 70.25 11.50 13.25 13.00 Treatment 4 13.25 11.50 12.00 5 61.75 13.50 11.50