If a male has a height of 186 cm, a waist circumference of 107.8 cm, and an arm circumference of 37.0 cm, what is the best predicted weight? Is that predicted value likely to be a good estimate? Is that predicted value likely to be very accurate? Predicting Weights of Males. In Exercises 9–12, refer to the accompanying table, which was obtained by using the data for males in Data Set 1 “Body Data” in Appendix B. The response (y) variable is weight (kg), and the predictor (x) variables are HT (height in cm), WAIST (waist circumference in cm), and ARM (arm circumference in cm).