Homework – 2A

• Download the file R.RDataand load it into R using load(“5.R.RData”). Consider the linear regression model of y on X1 and X2. What is the standard error for β1? (Also attached screenshot from RStudio to display the code has been executed)

• Next, plot the data using matplot(Xy,type=”l”). Which of the following do you think is most likely given what you see?

A)

1. b)
2. c)

3)

4)

5)

6)