Pyramid power
Subtitle: searching for an error in test scoring with 830,000 helpers
By: Howard Wainer
Series: Program statistics research technical report -- no. 81-14; ETS research report -- RR-81-27; Research report (Educational Testing Service) -- RR-81-27
Publisher: Educational Testing Service
Published: 1981
Place of publication: Princeton, NJ
Language: eng
Number of pages: 21
Subjects: Mathematical statistics; Error analysis (Mathematics); Examinations
Notes: "July 1981."