Stats Solutions

[See Steps] The following table is obtained Experiment 1 Experiment 2 Group 1 Group 2 Group 3 Group 1 Group 2 Group 3 5 0 1 1 5 4 0 0 10 2 3 4 3 10 8 2

Question: The following table is obtained

Experiment 1 Experiment 2
Group 1 Group 2 Group 3 Group 1 Group 2 Group 3
5 0 1 1 5 4
0 0 10 2 3 4
3 10 8 2 4 5
0 1 3 3 5 7
2 9 3 2 3 5
Mean (Xbar) 2 4 5 2 4 5
  1. By inspection, in which case would you guess that the difference among groups is more likely to be
    statistically significant. Why?
  2. Carry out the analysis of variance for Experiment 1. Are the results significant at the .05 level?
  3. Why did you retain (or reject) Ho in part (b) above?
  4. Carry out the analysis of variance for Experiment 2. Are the results significant at the .05 level?
  5. Why did you retain (or reject) Ho in part (d) above?
  6. Calculate the effect sizes, or eta squared, for both Experiment 1 and 2.
  7. Why do the F ratio and eta squared statistics differ dramatically for the two experiments even

though the sample means (i.e., 2,5,4) are the same for both?

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Solution: The downloadable solution consists of 3 pages
Deliverable: Word Document


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