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Exercise 18 Understanding Analysis of Variance (ANOVA) and Post Hos Analyses
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Exercise 18 Understanding Analysis of Variance (ANOVA) and Post Hos Analyses
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Exercise 18: Understanding Analysis of Variance (ANOVA)and Post Hos Analyses
1. Maryland 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. In order to calculate the degrees of freedom (df) in the
Mayland et al. study, you must subtract k (the number of groups in the study) by N (the
total number of participants in the study). In this case, you would subtract 255-3, which
equals a df of 252. Calculating the error df requires using the formula k-1, so 3-1 equals
an error df of 2.
2. What is the F value and p value for spiritual need-patient? What do these results mean?
What
do these results mean? The F value of spiritual need-patient is 38.1 and the p value for
spiritual need-patient is p=<0.0001. These results indicate that there is an extremely
significant difference between one group in the study and the other two groups being
studied
3. What is the post hoc result for facilities for the hospital with LCP vs. the hospital without
LCP vs. the hospital without LCP (see table 2)? Is this result significant? In your opinion, is
this an expected finding? The post hoc result for facilities for the hospital with LCP vs. the
hospital without LCP is p=0.85. Since this result is above the alpha, this indicates that
the means for the two groups are not statistically different. This is a somewhat
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