Cynthia Zang Facer Clark FRSS (born April 1, 1942)[1] is an American statistician known for her work improving the quality of data in the federal statistical system, and especially in the National Agricultural Statistics Service.
[8] She graduated in 1963 from Mills College,[9] where she majored in mathematics, and in the same year married Glenn Willett Clark, with whom she had six children.
[6][10] She came to Iowa State University planning to continue in pure mathematics,[11] but completed her Ph.D. there in 1977 in statistics.
Her dissertation was titled Convergence and ergodicity for conditional distributions: theory and applications, and was supervised by Herbert T.
[5] On her retirement, Clark and her husband served a mission to the Nauvoo Illinois Temple of the Church of Jesus Christ of Latter-day Saints.