Question

To test whether students in a higher grade level will be less disruptive in class, a...

To test whether students in a higher grade level will be less disruptive in class, a school psychologist records the number of documented interruptions during one day of classes from nine local high schools. The sample consisted of nine

(n = 9)

freshman, sophomore, junior, and senior high school classes. The data for each high school class are given in the table.

High School Class
Freshman Sophomore Junior Senior
0 4 3 2
5 0 3 3
4 1 4 5
1 4 0 0
1 2 6 4
3 5 0 4
2 2 5 4
2 0 6 3
4 3 4 2

(a) Complete the F-table. (Round your answers to two decimal places.)

Source of
Variation		 SS df MS F
Between
groups
Within
groups (error)
Total
Math   Statistics-And-Probability   
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Homework Answers

Answer #1

The statistical software output for this problem is:

Hence,

a) F table is:

Source SS DF MS F-Stat
Columns 7.19 3 2.40 0.72
Error 106.44 32 3.33
Total 113.64 35
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