| Nonlinear Regression Statistical Modeling
The annual amount of energy used for major end-uses was estimated for natural gas, electricity, and fuel oil by use of regression equations. For each equation, the dependent variable was the annual consumption of the given energy source for calendar year 1999. For natural gas, five end-uses are modeled (four specific end uses and an “other” category). The basic natural gas equation is:
The basic equations for electricity and fuel oil are similar in form (but have end uses that are appropriate for those energy sources). The nonlinear regression technique was used and the parameters were estimated by using the nonlinear regression procedure (PROC NLIN) of the SAS system.
Specific questions may be addressed to: Alan Swenson Release date: October 27, 2003 Page last modified on: http://www.eia.doe.gov/emeu/cbecs/enduse_consumption/nonlin.html |