In the HANES5 study an individual is 77 inches tall and weig

In the HANES5 study, an individual is 77 inches tall and weights 190 pounds. If the regression line predicted his weight to be 197 pounds, what is the error? Use pounds as your unit. Please explaine.

Solution

Note that

Error = |yactual - ypredicted| [it is the absolute deviation from the actual value]

Thus,

Error = |190 - 197| = 7 pounds [ANSWER]