Optional use of calculators on a mathematical test
Subtitle: effect on item difficulty and score equating
By: Ida M. Lawrence, Neil J. Dorans
Contributors: Dorans, Neil J.; Educational Testing Service
Series: Research report -- RR-94-40; Research report (Educational Testing Service) -- RR-94-40
Publisher: Educational Testing Service
Published: 1994
Place of publication: Princeton, N.J
Language: eng
Number of pages: 18
Subjects: Mathematics; Examinations; Calculators
Notes: "August 1994"--Cover.

Includes bibliographical references (p. 12).