Lecture 33- Confidence Interval for Slope Parameter

Question 1

What happens with increased error variance?

Answer 1

Makes it more difficult to draw reliable conclusions from a fitted regression model

Question 2

What does e hat with a bar on top mean?

Answer 2

Average (sample mean) of the residuals

Question 3

Do problem on slide 630

Answer 3

Answers on slide

Question 4

What does the mean of the sampling distribution beta 1 match? and what does it tell us?

Answer 4

The true population slope

Essentially tells us the precision with which we have estimated the mean

Question 5

Go through the example starting on slide 639

Question 6

Answer true or false questions on slide 645

Answer 6

answers on slide