Examine the Tukey's HSD post-hoc results. Click on all of the statements that are true.
Understand the Problem
The question is asking to evaluate the results from Tukey's HSD post-hoc analysis based on provided statistical data. It requires analyzing the statements related to depression levels in different months and determining which ones are true based on the confidence intervals and p-values in the ANOVA results.
Answer
True statements: Depression levels were significantly higher in December compared with March and July.
The statements that are true are: 'Depression levels were significantly higher in December compared with March' and 'Depression levels were significantly higher in December compared with July.'
Answer for screen readers
The statements that are true are: 'Depression levels were significantly higher in December compared with March' and 'Depression levels were significantly higher in December compared with July.'
More Information
Tukey's HSD test is used after a significant ANOVA to identify which specific groups differ. It controls the Type I error rate across multiple comparisons.
Tips
A common mistake is to ignore the p-value or to not consider the confidence interval bounds properly.
Sources
- Using Post Hoc Tests with ANOVA - Statistics By Jim - statisticsbyjim.com
- Tukey Test / Tukey Procedure / Honest Significant Difference - statisticshowto.com
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