Limitations Of T Test And Alternatives Flashcards
1
Q
Assumptions for independent samples t test
A
Samples have equal variance
2
Q
What is the robustness of a t test
A
T test assumptions are violated
Find =50 sig results
3
Q
What violations of t tests are critical
A
Not on t test
Skewed data
4
Q
Violations of independent samples which are critical
A
Sample sizes unequal and extremely unequal variances
5
Q
Alternatives
A
Log transformation
Test based on ranks
6
Q
U test
A
Independent
Outliner
7
Q
Wilcoxon
A
Outliner makes data v skewed
8
Q
Assumptions for one sample and paired sample t test
A
Need to be on interval or ratio scAle
Pops have a noRmal distribution
