| − | Following an established trend in the data even though there is not data available for that region.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref>
| + | '''Extrapolation''' is following an established trend in the data even though there is not [[fact|data]] available for that region.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> |