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# SPSS WORKSHEET 2: (ANOVA)

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SPSS Worksheet 2: (ANOVA)

Instructions: Lesson 25 Exercise File 1 is located at the end of the chapter under the heading Exercises in your Green and Salkind textbook. Complete the exercise and then complete the worksheet below by filling in the blanks and answering the questions.

H01: There is no significant difference in the amount of extrovertednesss among blondes, brunettes, and redheads.

Assumptions

Outliers: Create a Box and Whisker plot for each group. Hint: Graph > Legacy > Boxplot > Simple. Insert the Box and Whisker plot below: Note: Look for extreme outliers.

Insert Graph or Table Here

Fill in the blanks:
Groups

Outliers (Item #)

Are there any outliers?

Blonde

Brunet

< Note: Remove any outliers from the dataset before continuing.>

Assumption of Normality: Run a normality test for each group. Insert Tests of Normality table below:

Insert Graph or Table Here

Fill in the blanks:
Should you use a Shapiro-Wilks or Kolmogorov-Smirnov test? Why?

Groups

Significance

Is the assumption of normality met?

Blonde

Brunet

Assumption of Equal Variance: Insert Levene's Test of Equality of Error Variancesa table(s) below:

Insert Graph or Table Here

Fill in the blanks:
Significance

Is the assumption of equal variance met?

Results

Insert Tests of Between-Subjects Effects table(s) below:

Insert Graph or Table Here
Fill in the blanks:

Value

d.f. between Groups

d.f. within Groups

F-statistic

F-critical (Hint: See Appendix C in Warner)

p- value

Partial Eta Squared

Is the F- statistic greater than F-critical?

Is the p- value less than .05?

Should you reject or fail to reject the null?

Is the effect size small, medium, or large? Hint: See Table 5.2 in Warner, p. 208.

Should you run post hoc analysis?

Descriptive Statistics

Groups

Mean

S.D.

Blonde

Brunet

(more)
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