The following data were collected from a repeated-measures study investigating t

Question

The following data were collected from a repeated-measures study investigating the effects of 4 treatment conditions on test performance. Determine if there are any significant differences among the four treatments. State the null hypothesis. If you determine a significant treatment effect, use Tukey’s HSD test (overall = .05) to determine which treatments differ from which other treatments. Also, compute the percentage of variance explained by the treatment effect ( 2 ). Conclude with an appropriate summary describing what you found. Be sure that the statement includes/refers to some descriptive statistics and clearly states the outcome of any hypothesis and post-hoc tests you conducted.

Participant A B C D 1 6 3 3 0 2 4 4 2 2 3 4 2 0 2 4 6 3 3 0

Explanation / Answer

Running Anive one way test concludes that we can reject the null hypothesis since p-valus is less than significance level 0.05 and f statistic valus is more than the critical F value ,and conclude the alternative hypotheis that all treatment are different.

#Tuskey post hoc test

it is a pairwise comparison. Groups means are compared two at a time to determine whether the difference between the pair of means is significant.

15

Anova: Single Factor SUMMARY Groups Count Sum Average Variance Participant 4 10 2.5 1.666667 A 4 20 5 1.333333 B 4 12 3 0.666667 C 4 8 2 2 D 4 4 1 1.333333 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 35.2 4 8.8 6.285714 0.003542 3.055568 Within Groups 21 15 1.4 Total 56.2 19

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.