The modern era of econometrics, as we know it today, started in the 1940's. Klein (1971) attributes the formulation of the econometrics problem in terms of the theory of statistical inference to Haavelmo (1943, 1944) and Mann and Wald (1943).

Who started econometrics?

Econometrics was pioneered by Lawrence Klein, Ragnar Frisch, and Simon Kuznets. All three won the Nobel Prize in economics in 1971 for their contributions.

How old is econometrics?

Although, quantitative economic analysis is a good three centuries old, econometrics as a recognized branch of economics only began to emerge in the 1930s and the 1940s with the foundation of the Econometric Society, the Cowles Commission in the United States, and the Department of Applied Economics in Cambridge, ...