Questions A high school principal wanted to know if there was a difference in absences for 9th grade, 10th grade, 11th grade, or 12th grade among students with less than a 2.0 GPA. She took a random sample of n 5 students from each grade and compared absences among the four grades using ANOVA. The data are below: 9th grade 10th grade 11th grade 12th grade 10 17 15 9. 12 8. 16 11 11 12 11 14 12 7 14 15 12 2. Calculate the degrees of freedom Between Groups (dfsG) 3. Calculate the degrees of freedom Within Group (dfwa) 4. Calculate the Sum of Squares total (SStot) 6 679

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Author:Amos Gilat
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A high school principal wanted to know if there was a difference in absences for 9th grade, 10th
grade, 11th grade, or 12th grade among students with less than a 2.0 GPA. She took a random
sample of n = 5 students from each grade and compared absences among the four grades using
ANOVA. The data are below:
9th grade 10th grade 11th grade 12th grade
10
17
15
9.
12
8.
16
11
11
12
7.
11
14
12
7
14
15
12
2. Calculate the degrees of freedom Between Groups (dfBG)
3. Calculate the degrees of freedom Within Group (dfwc)
4.
Calculate the Sum of Squares total (SStot)
6
6
Transcribed Image Text:Questions A high school principal wanted to know if there was a difference in absences for 9th grade, 10th grade, 11th grade, or 12th grade among students with less than a 2.0 GPA. She took a random sample of n = 5 students from each grade and compared absences among the four grades using ANOVA. The data are below: 9th grade 10th grade 11th grade 12th grade 10 17 15 9. 12 8. 16 11 11 12 7. 11 14 12 7 14 15 12 2. Calculate the degrees of freedom Between Groups (dfBG) 3. Calculate the degrees of freedom Within Group (dfwc) 4. Calculate the Sum of Squares total (SStot) 6 6
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