My TI-83 calculator (several years old) has y = ax + b. Make sure you pay attention to which coefficient is which. Hazard: extrapolation.

My TI-83 calculator (several years old) has y = ax + b. Make sure you pay attention to which coefficient is which. Hazard: extrapolation. We find a regression line to predict the height of a child between 0 and 10 years old from the child”s age. Will the resulting prediction for the height of a 25 year old be reasonable? What about a 50 year old? Hazard: extrapolation. We find a regression line to predict the height of a child between 0 and 10 years old from the child”s age. Will the resulting prediction for the height of a 25 year old be reasonable? What about a 50 year old?