Extrapolation

n. act of guessing or inferring

In mathematics, extrapolation is the process of constructing new data points outside a discrete set of known data points. It is similar to the process of interpolation, which constructs new points between known points, but its results are often less meaningful, and are subject to greater uncertainty.
See more at Wikipedia.org...

Noun
1. (mathematics) calculation of the value of a function outside the range of known values
(hypernym) calculation, computation, figuring, reckoning
(derivation) interpolate, extrapolate
(classification) mathematics, math, maths
2. an inference about the future (or about some hypothetical situation) based on known facts and observations
(hypernym) inference, illation
(derivation) generalize, generalise, extrapolate, infer

n. extrapolation, act of guessing or inferring

n. extrapolation, act of guessing or inferring