An educator wants to evaluate four different methods aimed at reducing the time children spend "off task" in the classroom. To test these methods, she implements one method in each of four similar classrooms and records the time spent off task (in minutes) in each classroom. The results are given in the table.Classroom Method

lassroom MethodABCD

4 5 4 2

1 2 5 3

2 0 6 2

2 3 5 3

3 4 4 2

4 1 3 4

0 1 0 5

6 5 0 4

1 1 3 5

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

Source of

VariationSS df MS F Betweengroups

Within

groups (error)

Total