The following data are from an experiment comparing three treatment conditions.  Use an ANOVA with alpha = .05 to determine if there are any significant population mean differences.  Treatments       A B C Total 0 1 2 3 2 5 5 12 1 2 6 9 5 4 9 18 2 8 8 18  2 4 6   10 20 30 60 34 110 210 354 If the experiment uses an independent design (Chapter 10), can the researchers conclude there is a significant difference? What is the F-value for your test statistic? Do you retain or reject?  Whether the ANOVA was significant or not, do a Tukey’s post hoc test? What is your HSD? What do you conclude?

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The following data are from an experiment comparing three treatment conditions.  Use an ANOVA with alpha = .05 to determine if there are any significant population mean differences. 

Treatments

 

 

 

A

B

C

Total

0

1

2

3

2

5

5

12

1

2

6

9

5

4

9

18

2

8

8

18

 2

4

6

 

10

20

30

60

34

110

210

354

If the experiment uses an independent design (Chapter 10), can the researchers conclude there is a significant difference?

  1. What is the F-value for your test statistic? Do you retain or reject? 
  2. Whether the ANOVA was significant or not, do a Tukey’s post hoc test? What is your HSD? What do you conclude?
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