. Author manuscript; available in PMC: 2019 Jul 1.

Published in final edited form as: Popul Space Place. 2017 Dec 21;24(5):e2129. doi: 10.1002/psp.2129

Table 2.

Hypothesized relationships that each independent variable has with absolute percentage error (APE) and percentage error (PE)

Variable category	Variable measurements	APE	PE
Conventional factors for evaluating projection accuracy	Population growth rate	+	−
	Population size	−	+
	Population density	−	+
Age structure	Young Old	+	−
Racial/ethnic composition	Black Hispanic	+	−
Human capital	High school	−	−
	Bachelor’s degree
	College
Economic condition	Employment Income	−	−
Economic condition	Agriculture Retail
Transportation	Public transportation Commuting time Airport accessibility	−	−
Crime	Total crime Violent crime	+	+
Land use and development	Land developability	−	−