For parts

(a) and

(b) use the data, which consist of a criterion variable and three predictor variables;

plot all combinations of variables (six graphs); compute the correlation matrix; discuss the degree of intercorrelation and predictor–criterion correlation and the potential for accurate predictions of Y.

(a) Y X1 X2 X3

(b) Y X1 X2 X3 1 1 3 5 0 1 3 5 1 2 6 3 5 3 1 2 4 4 1 4 3 3 4 7 4 5 2 2 7 2 6 3 6 6 1 3 10 5 4 4 2 3 5 1 4 4 2 6