11.68 Frank Anscombe, senior research executive, has asked you to analyze the following four linear models using data contained in the data file Anscombe:

Y1 = b0 + b1X1 Y2 = b0 + b1X2 Y3 = b0 + b1X3 Y4 = b0 + b1X4 Use your computer package to obtain a linear regression estimate for each model. Prepare a scatter plot for the data used in each model. Write a report, including regression and graphical outputs, that compares and contrasts the four models.