AP Statistics. Linear Regression Inference. Hypothesis Tests: Slopes. Given: Observed slope relating Education to Job Prestige = 2.47 Question: Can we generalize this to the population of all Americans?
Linear Regression Inference
Sampling distribution of the slope
If observed slope falls very far from 0, it is improbable that b is really equal to zero. Thus, we can reject H0.
0Review: Slope Hypothesis Tests
Examine sub-samples at different values of X. Make histograms and check for normality.
Not very goodBivariate Regression Assumptions
Here, things look pretty good.
This looks pretty bad.