Trygve Haavelmo (1911–1999) was a Norwegian economist renowned for his contributions to econometrics, particularly for his work on the foundations of statistical inference in economics. He is best known for formalizing the concept of the structural equation model and for his contributions to the development of the theory of limited dependent variables. Haavelmo emphasized the importance of using statistical methods in economic analysis and highlighted the challenges of time series data in econometric models.
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