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## What are the assumptions for use of ANOVA?

What are the assumptions for use of ANOVA?

Exercise 18
1. Mayland et al. (2014) do not provide the degrees of freedom ( df ) in their study. Use the degrees of freedom formulas provided at the beginning of this exercise to
calculate the group df and the error df .
2. What is the F value and p value for spiritual need—patient? What do these results mean?
3. What is the post hoc result for facilities for the hospital with LCP vs. the hospital without LCP
(see Table 2 )? Is this result statistically significant? In your opinion, is this an expected finding?
4. What are the assumptions for use of ANOVA?
5. What variable on Table 3 has the result F = 10.6, p < 0.0001? What does the result mean?
Ex-33
Exercise 33
1. Do the data meet criteria for homogeneity of variance? Provide a rationale for your answer.
2. If calculating by hand, draw the frequency distribution of the dependent variable, hours worked at a job. What is the shape of the distribution? If using SPSS, what is
the result of the Shapiro-Wilk test of normality for the dependent variable?
The shape of the distribution is roughly normal. There may be a slight skew to the right. The Shapiro-Wilk test of normality shows that it is a normal distribution with p =
0.314.
Tests of Normality
Kolmogorov-Smirnov Shapiro-Wilk
Statistic df Sig. Statisticdf Sig.
HoursWorked .206 15 .085 .93415 .314
a. Lilliefors Significance Correction
3. What are the means for three groups’ hours worked on a job?
4. What are the F value and the group and error df for this set of data?
The F = 6.162, error df = 2, and group df = 12.
5. Is the F significant at α = 0.05? Specify how you arrived at your answer.