tw geographic location s : Rocky Mountain (0 ) and Arctic (1 ) . Original source of data is Jolicoeur (1959) , but subsequently many authors used this data to illustrate various multivariate statistical procedures. The goal of Jolicoeur's study Was to determine how the location and gender affect the skull shape among the wolf populations. There were 9 predictor variables: x1 = palatal length; x 2 - postpalatal length; x 3 zygomatic width; x 4 -palatal width outside the first upper molars; x 5 palatal width inside the second upper molars x 6 = width between the postglenoid foramina