A random survey was done at a small Lutheran college, and the students were asked how many hours a week they spent studying outside of class time. They were also asked what class they were in (1 = Freshman, 2 = Sophomore, 3 = Junior, and 4 = Senior).
a. Figure out the missing SS (sum of squares).
b. Find MS Error by dividing SS Error (from part a) by DF Error, and compare it with 65.1.
c. Divide MS class by MS Error (calculated in part b), and compare the result with the F-value.
d. When MS factor (in this case MS class) is more than MS Error, what does that show about the F-value? Will it be more or less than 1?

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One-way ANOVA: SchoolWork versus class MS 3 893.5 297.8 4.58 0.005 Source DF clasa Error 106????? 65.1 Total 109 7790.5 Level Mean 28 15.679 24 13.583 33 12.727 25 7.680