Question

Explain why post-hoc tests are needed for an ANOVA, and whether it would or would not...

Explain why post-hoc tests are needed for an ANOVA, and whether it would or would not be conducted if the decision from the ANOVA was to fail to reject the null hypothesis.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

whether it would or would not be conducted if the decision from the ANOVA was to fail to reject the null hypothesis.

If we fail to reject the null hypothesis that says all the means are equal or there is no treatment effect we do not perform any post hoc test

Post hoc tests are needed after ANOVA to compare the pairs of samples in terms of their mean, if they are equal or not once the null hypothesis is rejected. We check if the pairs are different from each other or some are alike.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Week 8 Discussion Consider the different post hoc tests discussed in the readings and respond to...
Week 8 Discussion Consider the different post hoc tests discussed in the readings and respond to the following: Describe the general rationale behind using post hoc tests (i.e., when they are used and why). One of the advantages of using an ANOVA (compared to using t-tests) is also a disadvantage—using an ANOVA makes it necessary to use post hoc tests if there is a significant main effect. We use a post hoc test because there is one specific advantage in...
Which is true about post hoc tests? Post hoc tests are not needed when comparing 3...
Which is true about post hoc tests? Post hoc tests are not needed when comparing 3 or more group means. Tukey's HSD test is the most conservative post hoc test. Tukey's HSD is used when all conditions are being compared. Scheffe's test is the most common post hoc analysis.
With k = 2 treatments, are post hoc tests necessary when the null hypothesis is rejected?...
With k = 2 treatments, are post hoc tests necessary when the null hypothesis is rejected? Explain your reasoning
1. What are the differences between planned contrasts (or planned comparisons) and post hoc tests? Why...
1. What are the differences between planned contrasts (or planned comparisons) and post hoc tests? Why are they used after performing a one-way ANOVA? How do you decide which to use of the two types of follow-up tests? 2. What are the main differences between between- and within-groups one-way ANOVAs? What determines which type of test should be used? Which is a stronger test and why?
12. What is the total of the ANOVA split into? 16. What is a post hoc...
12. What is the total of the ANOVA split into? 16. What is a post hoc test and why don’t you need it if your ANOVA is not significant? 18. What happens to the curve as the degrees of freedom for the numerator and for the denominator get larger? This information was also discussed in previous chapters.
What is a post-hoc test and why is it necessary to use one after a significant...
What is a post-hoc test and why is it necessary to use one after a significant ANOVA?
The one-way ANOVA is a generalization of what other statistical test? ANOVA is a generalization of...
The one-way ANOVA is a generalization of what other statistical test? ANOVA is a generalization of the two-sample t test for independent means. ANOVA is a generalization of Levene's test for differences between variations. ANOVA is a generalization of the paired t test for independent means. ANOVA is not related to any other tests. 2. The conclusion that you would draw from the test above is: A. fail to reject the null hypothesis. B. reject the null hypothesis. There is...
In your ANOVA you calculated an F-statistic (step 3) if 0.50. What would your decision be?...
In your ANOVA you calculated an F-statistic (step 3) if 0.50. What would your decision be? a. reject the null hypothesis b. fail to reject the null hypothesis c. not enough information given *please include reasoning to the answer chose
An ANOVA is as an Omnibus test. Briefly describe what this means, and also indicate why...
An ANOVA is as an Omnibus test. Briefly describe what this means, and also indicate why post-hoc tests are important.
1. A “one-way” between-subjects ANOVA is conducted when data are recorded in one group. True False...
1. A “one-way” between-subjects ANOVA is conducted when data are recorded in one group. True False 2. Post hoc tests control for the total alpha level for a series of tests conducted on the same data. True False 3. All post hoc tests control for the effect size of a significant result. True False 4. A one-way between-subjects ANOVA is conducted to test for mean differences between the levels of two or more factors. True False 5. A researcher conducts...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT