Question

Computational problems:

One-way ANOVA

A researcher wants to investigate different formats for taking an exam. She randomly assigns one-third of the class to an open book exam, one-third to no notes, and one-third to one page of notes only. The data appear below.

Use SPSS to analyze the data and answer the following questions. Be sure to include your SPSS output (you will need to copy/paste your ANOVA table into a Word document first).

1.       What is the F statistic reported in appropriate APA style?

2.       What is your decision? (use alpha = .05)

3.       Do you need to conduct a follow-up test?

4.       Do you need to determine the effect size? If yes, what are the results?

          Open book                  No notes            One page only

          65                        88                        70

          70                        94                        72

          72                         89                        76

          78                        98                        80

          82                        93                        81

          79                        94                        82

Answer 1

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Out put

a) F(2,15) = 22.38 , p = 0.00

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b) P-value is less than 0.05 , So, Reject the null

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c) Variances of populations should be equal. Response variable residuals are approximately normally distributed

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It means 78.5% of total variances is accounted by the treatment effect