Question

extrapolate Economists predict future buying trends partly by extrapolating from current economic data. ɛkˈstræpəˌleɪt

Accepted Answer

To extend or project facts or data into an area not known in order to make assumptions or to predict facts or trends. Scientists worry about the greenhouse effect because they have extrapolated the rate of carbon-dioxide buildup and predicted that its effect on the atmosphere will become increasingly severe. On the basis of their extrapolations, they have urged governments and businesses to limit factory and automobile emissions. Notice that it's acceptable to speak of extrapolating existing data (to produce new data), extrapolating from existing data (to produce new data), or extrapolating new data (from existing data)—in other words, it isn't easy to use this word wrong

word	extrapolate
definition	To extend or project facts or data into an area not known in order to make assumptions or to predict facts or trends.
eg_sentence	Economists predict future buying trends partly by extrapolating from current economic data.
explanation	Scientists worry about the greenhouse effect because they have extrapolated the rate of carbon-dioxide buildup and predicted that its effect on the atmosphere will become increasingly severe. On the basis of their extrapolations, they have urged governments and businesses to limit factory and automobile emissions. Notice that it's acceptable to speak of extrapolating existing data (to produce new data), extrapolating from existing data (to produce new data), or extrapolating new data (from existing data)—in other words, it isn't easy to use this word wrong
IPA	ɛkˈstræpəˌleɪt

Data Extrapolating Existing Facts Predict Effect Produce Extrapolate