Professor Stanton thought that verbal ability was a function of age.Stanton collected data on people aged 5 to 20.The analysis yielded the following equation: V = 20 + 3A where V = verbal ability and A = age.Stanton was asked to predict the verbal ability of a 30 year old.Stanton should respond
A) 110.
B) 90.
C)extrapolation is untrustworthy.
D)interpolation is untrustworthy.
E)53.

Question

Quizplus · Accepted Answer

The equation was derived from data on individuals aged 5 to 20, which means it is only valid for that age range. Extrapolation beyond the range of the data is untrustworthy, so the prediction of verbal ability for a 30-year-old using this equation is not reliable.

Professor Stanton Thought That Verbal Ability Was a Function of Age.Stanton