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1The action of estimating or concluding something by assuming that existing trends will continue or a current method will remain applicable.
‘sizes were estimated by extrapolation’
‘caution is advised in the interpretation and extrapolation of results’
count noun‘the figure is an extrapolation from prior data’
‘Such wild extrapolation is not in keeping with the news standards of the New York Times.’
‘I would be very cautious with such extrapolations.’
‘Much of this is based on speculative extrapolation.’
‘There are so many minor but questionable extrapolations and speculations as to divert even the sympathetic reader away from his greater historical aims.’
‘Any such extrapolation based on one incident only is a most unscientific and unreliable basis for projections.’
‘As a scientist I'd need more detail before making an extrapolation.’
‘These ideas, their precursors, their extrapolations and their interpretations have been repeatedly turned over during the last 120 years.’
‘An extrapolation of current trends clearly indicates the need for fundamental changes in the structure of supercomputing systems in the future.’
‘Its projections are not forecasts but extrapolations of present trends.’
‘Given that many economists have a difficult time identifying turning points in economic activity, perhaps it is not unreasonable for most people to rely on trend extrapolation.’
1.1Mathematics The extension of a graph, curve, or range of values by inferring unknown values from trends in the known data.
‘extrapolation of the logarithmic curve yielded an estimate of 66 species’
‘Therefore, it is not possible to estimate by extrapolation the O 2 concentration in the water resulting in anoxia in the lacunae.’
‘She was concerned that this figure of 6 .8 million was derived solely from mathematical extrapolations.’
‘Linear extrapolation was used to define reference values in children above 8.’
‘This estimate is between the linear and linear quadratic extrapolations from data on A bomb survivors.’
‘The calibration for 730 nm was obtained by extrapolation from the calibration graph.’
‘We should not make unwarranted extrapolations of simulation results to real sequence data.’
‘Some information on density is available from laboratory experiments; other data must be estimated by extrapolation.’
‘Extrapolation of the curve of viscosity vs temperature gives a figure for temperature of 13 °C.’
‘The extrapolation from any data set to the whole genome will be plagued by possible biases in representation until the two respective genomes are sequenced and annotated.’