Variance components models for content and passage effects in the English usage and natural sciences subtests of the ACT Assessment Program
By: by David Jarjoura.
Contributors: American College Testing Program. Research and Development Division.
Series: ACT technical bulletin -- no. 39
Publisher: Research and Development Division, American College Testing Program
Published: 1981
Place of publication: Iowa City, Iowa
Language: eng
Number of pages: 37
Subjects: ACT Assessment; Analysis of variance.; Educational tests and measurements.
Notes: "A previous version of this technical bulletin was presented at the annual meeting of the National Council on Measurment in Education, Los Angeles, April, 1981."

Bibliography: p. 37.