A study of the use of collateral statistical information in attempting to reduce TOEFL IRT item parameter estimation sample sizes
By: K. Linda Tang, Daniel R. Eignor
Contributors: Eignor, Daniel R.
Series: TOEFL technical report -- TR-17
Publisher: Educational Testing Service
Published: 2001
Place of publication: Princeton, N.J
Language: eng
Number of pages: 13
Subjects: Test of English as a Foreign Language; Validity; Statistical methods; English language; Study and teaching; Foreign speakers; Ability testing
Notes: "June 2001"--Cover.

"RR-01-11."

Includes bibliographical references (p. 13).