“instrumental variable”簡單造句，instrumental variable造句子

Once just an obscure statistical method, instrumental variables are now popping up all over the place.

Topics include statistical inference, regression, generalized least squares, instrumental variables, simultaneous equations models, and the evaluation of government policies and programs.

The trick is to find an “instrumental variable” which can act as a proxy for one variable in a statistical analysis, but which is clearly unrelated to the others.

The instrumental variable method and LILC criterion are used to estimate the order and parameter of electro-hydraulic position and force coupled system.