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

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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 Select the correct answer from above options

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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.

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