Reference no: EM131745515

Question: Dangers of not looking at a plot. Table presents four sets of data prepared by the statistician Frank Anscombe to illustrate the dangers of calculating without first plotting the data.

(a) Use x to predict y for each of the four data sets. Find the predicted values and residuals for each of the four regression equations.

(b) Plot the residuals versus x for each of the four data sets

(c) Write a summary of what the residuals tell you for each data set and explain how the residuals help you to understand these data.