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Both, interpolation and extrapolation are used to predict, or estimate, the value of one variable when the value (or values) of other variable (or variables) is known. This is done by extending evaluating the underlying function. For interpolation, the point in question is within the domain of the observed values (there are observations for greater and for smaller values of the variables) wheres for extrapolation the point in question is outside the domain.

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Difference between interpolation and extrapolation?

Interpolation is filling in the data points between the data that has already been collected. Extrapolation is filling in data points beyond the data that has already been collected, or extending the data.


Why is interpolation and extrapolation necessary?

Because of what it does


What are the kinds of prediction?

Interpolation and Extrapolation


Differentiate between extrapolation and interpolation?

Interpolation is a math method of estimating an answer for something when you know 2 data points, one greater and one less than the answer you are looking for. Extrapolation estimates an answer for a data point when you know data either greater than or less than the one you need, but not both.


What are the two kinds of prediction in science?

Interpolation & extrapolation


What are the characteristics of the literary genre of science fiction?

* plausibility * interpolation * extrapolation * 'What if?' hypothetical deviations * alternate history


What are the advantages of linear interpolation?

Advantages over what? For what? Generally linear interpolation is done because one infers that the relationship between points is linear and/or it is the the easiest kind of interpolation. In the absence of data or theory to help you infer the relationship between points the principle of parsimony suggest that use the simplest that gets the job done - linear.


The process of estimating values between measured data points is called?

Interpolation.


What is data extrapolation?

An extension or projection beyond the limit of the data is extrapolation.


What is the process of predicting values between the graphed points on a line?

The process is called interpolation, which applies a computed formula of the line to a given x or y value. (More specifically, it is "linear interpolation".)


What is meant by Piecewise linear interpolation?

Interpolation in general is a way to determine intermediate values from a set of coordinates. Linear interpolation would be to fit a single linear function to the entire set of coordinates. Piecewise linear interpolation would then be to determine intermediate values from the set of coordinates by fitting linear functions between each set of coordinates. Connect-the-dots so to speak.


Extrapolation is most advisable if it is difficult to predict what the dat relationship actually is beyond the range of the existing observations-true or false?

False. Extrapolation is most advisable for a data point between two known points.