COMPUTER APPLICATIONS ECONOMICS: ON‐LINE AND INTERACTIVE
展示如何利用现代计算机语言在线交互地进行经济学研究和教学，避免依赖SPSS等黑箱程序，并以APL语言演示了GNP指数构建和多元回归两个应用。
Utilizing modern computer languages, economic researchers and students can obtain maximum flexibility, portability, intellectual satisfaction, and sound research techniques by employing the computer on‐line and interactively without relying on canned programs like SPSS, TSP and other “black boxes”. The author exploits this method in research as well as in classes from principles to econometrics. The power of new languages is illustrated with APL for two economic applications: (1) construction of GNP indexes from price and quantity data, and (2) a multiple regression model. The latter, including coefficient estimates, predicted and actual dependent variables, individual errors, and the sum of squared residuals, takes one short line of code.