Regression 4: Inference in Regression - Testing for Significance

Example: Butler with Deliveries 00:00 1. Assumptions of regression model 07:01 2. Testing significance of independent variables - hypotheses 12:31 3. T test for significance 14:40 4. Performing t test with p value 18:53 5. Steps in excluding nonsignificant variables 21:08 6. T tests on Butler example 22:57 7. Testing with confidence intervals for regression coefficients