Answer Happy

Question 1 Suppose we have fitted the linear model in R using the code 1m(y - x) What is the mathematical expression for the model fitted? O y = Box B₁x O y = Bo + B₁x O y = Bo + x Oy =B₁x Question 2 What should we conclude from the following Cook's Distance plot from a linear model? Cook's Distance plot 10 30 20 observation number The equality of variance assumption is not satisfied. There are no influential observations. O Observation 40 is influential and should be removed from the model. O Observations 7, 39 and 40 are all influential and should all be removed. 0.25 0.20 0.15 Cook's distance 0.10 0.05 0.00 6 8 40 1 pts 1 pts