ANOVA quiz

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ANOVA quiz

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Background: Participants across five different age groups—18-29 years, 30-44 years, and 45+ years of age, rated their levels of stress ranking from 0-100.

The results of one-way ANOVA indicate that there is a significant difference in the perceived stress levels amongst the age groups (F (2,428) = 3.76, p = .005). The post-hoc Tukey test showed that the mean score for Group 1 (M=32.6, SD=5.56) was significantly different from Group 3 (M=34.50, SD=5.15). However, Group 2 (M=33.59, SD=5.29) did not differ significantly from either Group 1 or Group 3.
What important statistic is not reported here?

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Background: Participants across five different age groups—18-29 years, 30-44 years, and 45+ years of age, rated their levels of stress ranking from 0-100.

The results of one-way ANOVA indicate that there is a significant difference in the perceived stress levels amongst the age groups (F (2,428) = 3.76, p = .005). The post-hoc Tukey test showed that the mean score for Group 1 (M=32.6, SD=5.56) was significantly different from Group 3 (M=34.50, SD=5.15). However, Group 2 (M=33.59, SD=5.29) did not differ significantly from either Group 1 or Group 3.
Which number indicates that there is a significant difference in levels of stress amongst the age groups?

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Background: Participants across five different age groups—18-29 years, 30-44 years, and 45+ years of age, rated their levels of stress ranking from 0-100.

The results of one-way ANOVA indicate that there is a significant difference in the perceived stress levels amongst the age groups (F (2,428) = 3.76, p = .005). The post-hoc Tukey test showed that the mean score for Group 1 (M=32.6, SD=5.56) was significantly different from Group 3 (M=34.50, SD=5.15). However, Group 2 (M=33.59, SD=5.29) did not differ significantly from either Group 1 or Group 3.
What is the type of ANOVA?

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The alternative hypothesis for between ANOVA is that

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why should you do a single ANOVA rather than multiple t-tests when you would like to compare many conditions?

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Background: Participants across five different age groups—18-29 years, 30-44 years, and 45+ years of age, rated their levels of stress ranking from 0-100.

The results of one-way ANOVA indicate that there is a significant difference in the perceived stress levels amongst the age groups (F (2,428) = 3.76, p = .005). The post-hoc Tukey test showed that the mean score for Group 1 (M=32.6, SD=5.56) was significantly different from Group 3 (M=34.50, SD=5.15). However, Group 2 (M=33.59, SD=5.29) did not differ significantly from either Group 1 or Group 3.
How many one-way ANOVAs were performed?

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If you calculate and obtain the F value greater than the critical value of F, you should

Your score is

The average score is 85%

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