Ragnar Anton Kittil Frisch (3 March 1895 – 31 January 1973) was a Norwegian economist and the co-winner with Jan Tinbergen of the first Nobel Memorial Prize in Economic Sciences in 1969.

Frisch was one of the founders of economics as a modern science. He made a number of significant advances in the field of economics and coined a number of new words including econometrics and macroeconomics. His 1926 paper on consumer theory helped set up Neo-Walrasian research. He formalized production theory (1965). In econometrics he worked on time series (1927) and linear regression analysis (1934). With Frederick V. Waugh, he introduced the celebrated Frisch–Waugh theorem (Econometrica 1933) (sometimes referred to as the Frisch–Waugh–Lovell theorem). In oligopoly theory he developed the conjectural variation approach. Frisch also is credited with introducing the term “model” in its modern economic sense by Paul Samuelson, based on a 1930 Yale University lecture.^[10] His 1933 work on impulse-propagation business cycles became one of the principles of modernNew Classical business cycle theory. He also helped introduce econometric modeling to government economic planning and accounting. He was one of the founders of the Econometric Society and editor of Econometrica for over twenty years. The Frisch Medal, so named in his honor, is given every two years for the best paper published in the aforementioned Econometrica in the previous five years.

Ragnar Frisch. (2015, May 5). In Wikipedia, The Free Encyclopedia. Retrieved 09:40, May 22, 2015, from http://en.wikipedia.org/w/index.php?title=Ragnar_Frisch&oldid=660919201

Letters to or from Frisch R., Ragnar (Prof. Dr.)