A professor has a class with five recitation sections. Each section has 18 students. The question is whether or not the average test score is significantly different for any of the sections. Group-1 Group-2 Group-3 Group-4 Group-5 86 56.8 78 65 41.8 62.5 52.2 83.5 70.3 60.3 75.2 61.1 88.8 75.3 53.2 44.6 51.3 70 87.3 86 42.2 62.1 49.9 76.6 49.7 65.8 75.1 65.7 44.4 49.8 81.3 49.7 57.8 78.8 62.9 84.9 60.1 58.3 57.1 55.8 55.5 66.5 57.5 64.8 73.7 75.9 64.2 61.4 75 75 59 80.9 64.5 84.9 63.2 69.9 60.2 77.1 71.8 69.9 59.3 51 76.2 81.6 62 48 71.7 69.3 66.5 50.8 66 56.9 88.1 75.3 58.4 70.3 63.7 73.9 67.5 46.2 62.2 44.3 60.1 90.2 61.8 67.5 40.5 68.2 54.9 71.7 Conduct a test to determine if the group means are equal using α=0.02α=0.02.   Summary statistics: F-ratio (F-test statistics) =       p-value =      (report accurate to at least 4 decimal places) What is the measure of effect size ω2ω2 ? This is on the Excel sheet and is also a measure of the percentage of variation explained by the variable being tested, similar to η2η2 and for correlation, r2r2 .

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A professor has a class with five recitation sections. Each section has 18 students. The question is whether or not the average test score is significantly different for any of the sections.

Group-1 Group-2 Group-3 Group-4 Group-5
86 56.8 78 65 41.8
62.5 52.2 83.5 70.3 60.3
75.2 61.1 88.8 75.3 53.2
44.6 51.3 70 87.3 86
42.2 62.1 49.9 76.6 49.7
65.8 75.1 65.7 44.4 49.8
81.3 49.7 57.8 78.8 62.9
84.9 60.1 58.3 57.1 55.8
55.5 66.5 57.5 64.8 73.7
75.9 64.2 61.4 75 75
59 80.9 64.5 84.9 63.2
69.9 60.2 77.1 71.8 69.9
59.3 51 76.2 81.6 62
48 71.7 69.3 66.5 50.8
66 56.9 88.1 75.3 58.4
70.3 63.7 73.9 67.5 46.2
62.2 44.3 60.1 90.2 61.8
67.5 40.5 68.2 54.9 71.7

Conduct a test to determine if the group means are equal using α=0.02α=0.02.  

Summary statistics:
F-ratio (F-test statistics) = 
     p-value = 
    (report accurate to at least 4 decimal places)

What is the measure of effect size ω2ω2 ? This is on the Excel sheet and is also a measure of the percentage of variation explained by the variable being tested, similar to η2η2 and for correlation, r2r2 . 
    (report accurate to at least 3 decimal places)

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