| 식 1. | Y ^ = i Y ^ + b 1 J I + b 2 W + b 3 Z + b 4 J I ⋅ W + b 5 J I ⋅ Z + b 6 W Z + b 7 J I ⋅ W ⋅ Z + e Y ^ = i Y ^ + ( b 1 + b 4 W + b 5 Z + b 7 W Z ) J I + b 2 W + b 3 Z + b 6 W Z + e Y ^ = i Y ^ + ( b 1 + b 5 Z ) J I + [ ( b 4 + b 7 Z ) W ] J I + b 2 W + b 3 Z + b 6 W Z + e Y ^ |