Source: Jerison, H. J. (1973), "Evolution of the Brain and Intelligence," New York: Academic Press. Taken From: Rousseeuw, P. J. and Leroy, A. M. (1987), "Robust Regression and Outlier Detection," New York: John Wiley & Sons, p. 57. Dimension: 28 observations on 2 variables Description: The sample was taken from a larger data set. It is to be determined whether a larger brain is required to govern a heavier body. The observations represent the following animals: 1 Mountain beaver 2 Cow 3 Gray wolf 4 Goat 5 Guinea pig 6 Diplodocus 7 Asian elephant 8 Donkey 9 Horse 10 Potar monkey 11 Cat 12 Giraffe 13 Gorilla 14 Human 15 African elephant 16 Triceratops 17 Rhesus monkey 18 Kangaroo 19 Hamster 20 Mouse 21 Rabbit 22 Sheep 23 Jaguar 24 Chimpanzee 25 Brachiosaurus 26 Rat 27 Mole 28 Pig Column Description 1 Body weight in kilograms 2 Brain weight in grams