Discuss why ANOVA requires post-hoc analyses, while t tests do not, and describe under what conditions...
Discuss why ANOVA requires post-hoc analyses, while t tests do not, and describe under what conditions a post-hoc test must be performed.
Homework Answers
ANOVA compares the equality of more than two means where as the t test only compares two mean for the equality
In two means if we got the result whether they are equal or not the question ends,
but in case of ANOVA if all the means are equal the question ends, where if at least one mean is different from other ( null hypothesis is rejected ) we proceed with post hoc t test to obtain the mean different from all
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Discuss why ANOVA requires post-hoc analyses, while t tests do
not, and describe under what conditions...
In a One-Way ANOVA, it is essential to do Post-Hoc analyses (comparisons) because Group of answer...
In a One-Way ANOVA, it is essential to do Post-Hoc analyses (comparisons) because Group of answer choices a. The Post Hoc tells us if there is a significance between “all groups combined” while the F ratio tells us where only one difference is. b. The F ratio only tells us there is a significance between “all groups” and the Post Hoc comparisons show us where that difference is in each “pair” of groups. c. The F ratio tells us if...
Why must post hoc analyses be conducted when the Fobt > Fcrit? ANOVA is only telling...
Why must post hoc analyses be conducted when the Fobt > Fcrit? ANOVA is only telling you that there is a/ARE difference(s), not which groups are different. ANOVA has little power, so one must continue to look for differences to find them. Error sources have been found, now they need to be measured. Confidence intervals will help construct a range of possible values a mean could have. In order to measure the effect of the independent variable on the dependent...
ANOVA Homework 1. How is an ANOVA different from a t-test? 2. When and why do...
ANOVA Homework 1. How is an ANOVA different from a t-test? 2. When and why do you use a post-hoc test? Indicate when you use a Fisher's test vs. a Tukey's HSD. 3. A researcher was interested in examining the decision making processes of people who work different shifts in a factory. They ask the participants from each shift to answer a set of questions regarding how they would deal with potential issues in the factory. Below are the scores...
Which of the following post hoc tests uses the t critical value in the calculation to...
Which of the following post hoc tests uses the t critical value in the calculation to determine the critical value for the test? a. Tukey’s HSD test b. Schaffé test c. SNK test d. Fisher’s LSD test
QUESTION 1 After a one-way ANOVA test, you conduct all possible post-hoc pairwise comparisons using the...
QUESTION 1 After a one-way ANOVA test, you conduct all possible post-hoc pairwise comparisons using the Bonferroni correction. If there were 4 groups (J = 4), what would your adjusted alpha value be for the post-hoc tests? Remember, our alpha is 0.05 for the class. Round final answers to four decimal places. QUESTION 2 After a one-way ANOVA test, you conduct all possible post-hoc pairwise comparisons using the Bonferroni correction. If there were 6 groups (J = 6), what would...
Assignment #5: Analysis of Variance and Post Hoc Tests Directions: Using the information from the...
Assignment #5: Analysis of Variance and Post Hoc Tests Directions: Using the information from the following scenario, conduct a one-way ANOVA and specify the LSD post hoc test. The superintendent is continuing to examine the data that has been reported for the district. Another question concerned the differences in performance on high stakes tests. To examine this issue, the superintendent obtained the average scale scores for schools that participated in the high stakes testing for the district and two comparison...
Why do we use an ANOVA instead of doing multiple T-tests?
Why do we use an ANOVA instead of doing multiple T-tests?
Under what conditions is the one-way ANOVA test equivalent to, worse, and better than the t-test?
Under what conditions is the one-way ANOVA test equivalent to, worse, and better than the t-test?
Under what conditions is the one-way ANOVA test equivalent to, worst, and better than the t-test...
Under what conditions is the one-way ANOVA test equivalent to, worst, and better than the t-test ?
Why would you use ANOVA rather than multiple t tests for an experiment comparing more than...
Why would you use ANOVA rather than multiple t tests for an experiment comparing more than two treatment conditions?
Why must post hoc analyses be conducted when the Fobt > Fcrit? ANOVA is only telling you that there is a/ARE difference(s), not which groups are different. ANOVA has little power, so one must continue to look for differences to find them. Error sources have been found, now they need to be measured. Confidence intervals will help construct a range of possible values a mean could have. In order to measure the effect of the independent variable on the dependent...
ANOVA Homework 1. How is an ANOVA different from a t-test? 2. When and why do you use a post-hoc test? Indicate when you use a Fisher's test vs. a Tukey's HSD. 3. A researcher was interested in examining the decision making processes of people who work different shifts in a factory. They ask the participants from each shift to answer a set of questions regarding how they would deal with potential issues in the factory. Below are the scores...
QUESTION 1 After a one-way ANOVA test, you conduct all possible post-hoc pairwise comparisons using the Bonferroni correction. If there were 4 groups (J = 4), what would your adjusted alpha value be for the post-hoc tests? Remember, our alpha is 0.05 for the class. Round final answers to four decimal places. QUESTION 2 After a one-way ANOVA test, you conduct all possible post-hoc pairwise comparisons using the Bonferroni correction. If there were 6 groups (J = 6), what would...
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