Question

What is predicting y for a value of x that is within the interval of points that we saw in the original data called?

(a) Regression

(b) Extrapolation

(c) Intra polation

(d) Polation

The question was posed to me at a job interview.

I need to ask this question from Linear Regression topic in chapter Commands, Packages, Visualizing Data and Linear Regression of R Programming

Answer 1

Correct answer is (c) Intra polation

For explanation I would say: Predicting y for a value of x that is within the interval of points that we saw in the original data is called interpolation. Predicting y for a value of x that’s outside the range of values we actually saw for x in the original data is called extrapolation.