Assumptions Flashcards
1
Q
Independent observations
A
each record in the data set is independent of others
2
Q
Normality
A
just assume this is met when the sample size n > 30
3
Q
Homogeneity of variences
A
Independent samples t-test and ANOVA will automatically run a Levene’s Test for homogeneity of variances
If the p-value of Levene’s test is significant, there is a significant difference between variances i.e. this assumption is not met
4
Q
One-sample T test
AND
Paired-sample T test
A
- independent observations
- DV is continuous and approximately normal
5
Q
Independent sample T test
A
- independent observations
- DV is continuous and approximately normal
- homogeniety of variances
6
Q
Chi-squared test
A
- independent observations
- both IV and DV are categorical
- expected values should be > 5 in 80% of cells
7
Q
One way ANOVA
A
- independent observations
- DV is continuous and approximately normal
- IVs are categorical
- homogeneity of variances
8
Q
Pearson’s R
A
- numerical variables
- normality
- linear relationship
