The Weight data set contains the brain weights (y) and body weights (x) of 32 species.
a. Create a scatterplot of y versus x with a regression line (y = b0 + b1x), a plot of residuals versus the explanatory variable, a plot of residuals versus predicted (or “fitted”) values (y), and either a normal probability plot or a histogram of the residuals.
b. Try various transformations of the explanatory and response variables to create a better linear regression model.