Animals Answers

Using log10():

R-squared = 0.6076, PVE = 60.76%
Regression equation:
log10(brain.hat) = 1.10958 + 0.49599 * log10(body)   -or-
brain.hat = 10^(1.10958 + 0.49599 * log10(body))   -or-
brain.hat = 12.87 * body^0.49599

Using log():
R-squared = 0.6076, PVE = 60.76%
Regression equation:
log(brain.hat) = 2.55490 + 0.49599 * log(body)   -or-
brain.hat = e^(2.55490 + 0.49599 * log(body)   -or-
brain.hat = 12.87 * body^0.49599

Outliers: the three dinosaurs
Diplodocus
Triceratops
Brachiosaurus