REVIEW

1
REVIEW
2
What test?
One Variable
Goodness-of- Fit ?2
Type of categorization
Qualitative
Two Variables
?2 test for Independence
Type of data
Pearson Correlation
Degree of Relationship
Relationship
Primary Interest
Regression
Prediction
Quantitative
Type of question
Difference
3
Observation vs Population
z-score
One
Modified z-score
Pop variance known
Sample vs.Population
Pop variance unknown
Single-sample t-test
Difference
Number of Groups
Two or more
ANOVA
Independent
Independent Sample t
Two
Relation b/w samples
Matched
Matched Sample t
4
Additional tests

• Homogeneity of variance
• For both, independent sample t-tests and ANOVA
• Normality assumption
• ?2 test
• Pooled variance
• Independent-samples t-test with unequal sample
  sizes
• Power
• Single-sample t-tests
• radj
• Estimating ?
• Residual variance and standard error of the
  estimate
• How well does the regression line fit the data
• Hypothesis testing in correlation
• t-test for r vs. 0
• z-score for r1 vs. r2
• Cramers Phi
• Test the degree of association for ?2
• Cohens Kappa
• Measure of agreement