Statistics important Flashcards
What test to use?
IV: Scale
DV: Scale
Any other prop
Regressions
What test to use?
IV: Scale
DV: Categorical
Any other prop
Logistic regressions
What test to use?
IV: Categorical
DV: Scale
Groups: 2
Paired: N
Normal: Y
Un-paired T-test
What test to use?
IV: Categorical
DV: Scale
Groups: 2
Paired: Y
Normal: Y
Paired T-test
What test to use?
IV: Categorical
DV: Scale
Groups: >2
Normal: Y
ANOVA (analysis of varience)
What test to use?
IV: Categorical
DV: Scale
Groups: 2
Paired: N
Normal: N
Mann-Whitney Utest
What test to use?
IV: Categorical
DV: Scale
Groups: 2
Paired: Y
Normal: N
Wilcoxon signed rank test
What test to use?
IV: Categorical
DV: Scale
Groups:>2
Paired: N
Normal: N
Kruskall-Wallis test
What test to use?
IV: Categorical
DV: Scale
Groups:>2
Paired: Y
Normal: N
Friedman test
What test to use?
IV: Categorical
DV: Categorical
Groups: 2
Count >=5 in >= 75% cells
Paired: N
Chi-square test
What test to use?
IV: Categorical
DV: Categorical
Groups: 2
Count >=5 in < 75% cells
Paired: N
Fisher’s exact test
What test to use?
IV: Categorical
DV: Categorical
Groups: 2
Paired: Y
McNemar’s test
What test to use?
IV: Categorical
DV: Categorical
Groups: >2
Chi-square test
How to check for normality with n > 50? (not sensitive to tail)
Kolmogorov-Smirnov test
How to check for normality with n < 50? ( sensitive to tail)
Shapiro-Wilks test
How to test for homogenity?
Levene’s test
What is a neg shifted dist?
Extended tail on left
What is a pos shifted dist?
Extended tail on right
How to fix neg dist?
Square
Cube
Exponential
Transformations
How to fix pos dist?
Square root
Cube root
Log
Transformations
Likert scale
(scale variable)
