• Home

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.