POS 3713 Chapter Notes - Chapter 7: Null Hypothesis, Statistical Hypothesis Testing

• School: FSU
• Department: Political Science
• Course: POS 3713
• Professor: William Berry

Document Summary

7. 1 bivariate hypothesis tests and establishing causal relationships. Helps us answer the question: are x and y related? . Whichever test is more appropriate depends on the variable type of the independent variable (iv) and the dependent variable (dv) Tabular analysis: both the iv and dv are categorical. Di erence of means: when the dv is continuous and the iv is categorical. Probit/logit: when the iv is continuous and the dv is categorical. Correlation coe cient: when both the iv and dv are continuous. 7. 3 all roads lead to p p = probability . 7. 3. 1 the logic of p-values p-value: ranges between 0 and 1, is the probability that we would see the relationship that we are nding because of random chance. The p-value tells us the probability that we would see the observed relationship between the 2 variables in our sample data is there were truly no relationship between them in the unobserved population.