- Stratford, Iowa, United States
- 853 View(s)
- Facebook: 0 Like
- Twitter: 929 Followers
Dr. Tollefson has over 20 years experience in technical and scientific fields. Her Ph.D. and M.S. in statistics are from Iowa State University and her B.A. in physics is from Reed College.Dr. Tollefson's dissertation was on the problem of nonresponse in survey samples.