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ERIC Number: ED219428
Record Type: Non-Journal
Publication Date: 1982-Mar
Pages: 18
Abstractor: N/A
Reference Count: N/A
Properties of a Proposed Approximation to the Standard Error of Measurement.
Nitko, Anthony J.
An approximation formula for the standard error of measurement was recently proposed by Garvin. The properties of this approximation to the standard error of measurement are described in this paper and illustrated with hypothetical data. It is concluded that the approximation is a systematic overestimate of the standard error of measurement computed in the usual way with Kuder-Richardson formula 20. The relative error of the approximation was small for tests of more than 20 items. However, for short, internally consistent tests of the type used in instructional programs, the relative error can be quite large. (Author/BW)
Publication Type: Speeches/Meeting Papers; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A