Data set: Weight In addition to brain weights and body weights, the Weight data set contains information on lifespan, gestation, and hours of sleep per day.
a. Create a scatterplot of lifespan versus body weight with a regression line (i = b0 + b1xi), 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.
c. Repeat Parts A and B using gestation as the response variable.
d. Repeat Parts A and B using sleep per day as the response variable.