Please, can anyone help me to answer this? thank you Understanding Analysis of V
ID: 3312802 • Letter: P
Question
Please, can anyone help me to answer this? thank you
Understanding Analysis of Variance (ANOVA) and Post Hoc Analyses
Study Questions
1. What type of analysis was conducted in this study to examine group differences? What were three groups analyzed for differences?
2. What did the researcher set the level of significance, or alpha (), at for this study?
3. State the null hypothesis for communication for the three groups. Should this null hypothesis be accepted or rejected? Provide a rationale for your answer.
4. What is the purpose of conducting post hoc analysis?
5. Identify the post hoc results for communication on Table 2. Which results are statistically significant? What do these results mean?
Explanation / Answer
1. What type of analysis was conducted in this study to examine group differences? What were three groups analyzed for differences?
Ans: One-way ANOVA is conducted in this study to examine group differences. Three groups for differences are analyzed because we want to test whether any three different groups of a treatment have the significant effect on the interesting variable. For example, we can use to test whether there is the significant difference in bond strength between the three different age groups.
2. What did the researcher set the level of significance, or alpha (), at for this study?
Ans: The researcher set the level of significance, or alpha (), at for this study because we predefined the probability of making the wrong decision when the null hypothesis is true (alpha ()) for comparison with estimated the P-value.
3. State the null hypothesis for communication for the three groups. Should this null hypothesis be accepted or rejected? Provide a rationale for your answer.
Ans: Null Hypothesis: All groups have the same effect on the interest variable. It accepted or rejected will find after analyzed the data.
4. What is the purpose of conducting post hoc analysis?
Ans: If we reject the null hypothesis using ANOVA, we conclude that at least one group has a significantly different effect on the interest variable than remaining groups. Here, we can not identify which group is more effective. Hence, we want the further comparison of between the groups. It is by conducting post hoc analysis.
5. Identify the post hoc results for communication on Table 2. Which results are statistically significant? What do these results mean?
Ans: Table 2 is not provided.