Ragnar Anton Kittil Frisch was a Norwegian economist and the winner of the Nobel Memorial Prize in Economic Sciences in 1969. Frisch was known for his contributions to econometrics and his pioneering work in the field of time series analysis. However, if you are looking for synonyms for his name, you can use his initials RAK or simply refer to him as Professor Frisch. Additionally, Frisch can be described as a statistician, a social scientist, or a mathematical economist. Regardless of what you call him, Frisch's impact on the field of economics will always be remembered.