Statistics 102H: Multiple regression

Administrivia

• I made up a homework page.
• Homework due date pushed back

Car data (cont'd)

t statistics

• |t| > 2 is .05 level of significance
• Tests if the slope MIGHT be zero.
• If the slope were actually zero, then less than 5% of the time should the |t| be bigger than 2.
• JMP gives p-values that are easier to interpret. Is the p-value less than .05?

Homework

• Finish the first assignment.
• look at am stat archive. Pick a dataset that sounds interesting (say AAUP, car, or baseball). Pick an interesting Y variable and do a multiple regression. Match all the pictures we generated in class 4. You should be able to understand both how to interpret each graph and why it is important to generate it.