"Age, x" "Boy Height, y" 2 36.1 2 34.2 2 31.1 3 36.3 3 39.5 4 41.5 4 38.6 5 45.6 5 44.8 5 44.6 6 49.8 7 43.2 7 47.9 8 51.4 8 48.3 8 50.9 9 52.2 9 51.3 10 55.6 10 59.5