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Difference between interpolation and extrapolation

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Anonymous

 ∙ 10y ago
Updated: 9/27/2023

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.

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 ∙ 10y ago

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What is the meaning of interpolation and extrapolation?

Interpolation is the process of estimating the value of some data and processing it in-line with other data obtained from another source. Extrapolation is the ability to estimate the value of something outside a known range from values within that range by assuming that the unknown quantity follows logically from an analysis of the known ones

What is illogical extrapolation called?

It's called illogical extrapolation.

What is estamating a value between two known values in a data called?

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.

What is making predictions in math?

Extrapolation.

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