Refer to Example 8.2.
In example

a. Demonstrate that s2 W is not the average of the three sample variances: s21, s22, and s23.
b. Do the data indicate any violations in the conditions for conducting the AOV F test?

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Standard Sample Method Test Scores 196 79 91 85 83 91 82 87 2 77 76 74 73 78 71 80 3 66 73 69 66 77 73 71 70 74 71000 3.674 Mean Deviation Size 86.750 5625 7557 3.101 8