Extrapolate-Interpolate | Commonly Confused Words
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Extrapolate vs. Interpolate

Extrapolate

/ɪkˈstræpəleɪt/
To use known information to estimate or predict something not yet known

Examples:

Economists often extrapolate future trends from past data.She can extrapolate the outcome based on her vast experience.Scientists extrapolate climate changes using computer models.

Synonyms:

Antonyms:

Interpolate

To estimate or calculate a value within two known values in a sequence of values.

Examples:

The artist often interpolated modern themes into classic works.The mathematician interpolated values to complete the missing data.The historian interpolates disputed events to offer a fresh perspective.

Synonyms:

Antonyms:

Ways to tell them apart:

etymology
  • Both words involve estimating, but in different directions. Remember that interpolate means estimating within a known range.
  • Interpolate has an i like inside, which can remind you that it's about fitting within existing data.
  • In contrast, extrapolate extends beyond the known data range, like reaching out into the unknown.
  • Extrapolate has an extra, which helps remind us it goes beyond the existing data.
  • Inter is like inner, so interpolate stays within while extrapolate goes outward.
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