here is height of giraffes from 2 to 20. x = years, y = inches.

(2,34.2),(3,37.5),(4,40.3),(5,43), (6,45.5),(7,48), (8,50.4),(9,52.5),(10,54.5),(11,56.5),(12,58.7),(13,61.5),(14,64.5),(15,67),(16,68.3),(17,69),(18,69.2),(19,69.5),(20,69.7)

graph the data, what is shape and association

fine line of best fit, by median median. then find residuals for points. find lsrl. find residuals.