sentence: Extrapolation refers to the use of a fitted curve beyond the range of the observed data.
sentences_before: By John R. Hauser. By Claire Marton. Page 150. and to summarize the relationships among two or more variables. Encyclopedia of Research Design, Volume 1. Edited by Neil J. Salkind.
sentences_after: Community Analysis and Planning Techniques. By Richard E. Klosterman. This is subject to a degree of uncertaintyAn Introduction to Risk and Uncertainty in the Evaluation of Environmental Investments.
concept_name: extrapolation
headings: Curve fitting
categories: Mathematical approximation