On biases in estimation due to the use of preliminary tests of significance 
By: by Theodore A. Bancroft ...
Published: 1944
Place of publication: [N.p
Language: eng
Number of pages: 204
Subjects: Mathematical statistics.; Sampling (Statistics)
Notes: "References": p. 204.
Thesis (PH. D.)--Iowa State College of Agriculture and Mechanic Arts, 1943. Doctoral thesis no. 730.
"Reprinted from the Annals of mathematical statistics, vol. 15, no. 2, June, 1944."