Testing for differences between 3 or more samples Flashcards
1
Q
What is the parametric test for differences between 3 or more samples?
A
One way ANOVA
2
Q
What is the non parametric test for differences between 3 or more samples?
A
Krustal-Wallis ANOVA
3
Q
If you obtain a significant result (P < 0.05) from the one way ANOVA, then what should you do?
A
Perform a Tukey post-hoc multiple comparison test to see where the differences lie between the samples
4
Q
What is a significant result in the Tukey test?
A
P < 0.001
5
Q
What do you report in results after a one-way ANOVA and a post hoc tukey test?
A
F result, P values and DF within groups and between groups
6
Q
What would you report if you have used Krustal Wallis test?
A
Chi-squared result, P-value ( P < 0.05), and degrees of freedom
