The use of presmoothing and postsmoothing to increase the precision of equipercentile equating

Fairbank, Benjamin A.
1987
Thumbnail Image

View/Download File

v11n3p245.pdf (2.55 MB)

Persistent link to this item

https://hdl.handle.net/11299/104061
Statistics
View Statistics

Journal Title

Journal ISSN

Volume Title

Title

The use of presmoothing and postsmoothing to increase the precision of equipercentile equating

Authors

Published Date

1987

Publisher

Type

Article

Abstract

The effectiveness of smoothing in reducing sample-dependent errors in equipercentile equating of short ability or achievement tests is examined. Fourteen smoothers were examined, 7 applied to the distributions of scores before equating and 7 applied to the resulting equipercentile points. The data for the study included both results of simulations and results obtained in the operational administration of a large testing program. Negative hypergeometric presmoothing was more effective than the other presmoothers. Among the postsmoothers, both orthogonal regression and cubic splines were effective, especially the latter. The use of smoothing methods must be considered in light of their costs (increases in average signed deviations) and benefits (decreases in root mean square deviations). For many purposes, the benefits of smoothing with the negative hypergeometric may outweigh its costs.

Keywords

Description

Related to

Replaces

License

Collections

Applied Psychological Measurement, Volume 11, 1987

Series/Report Number

Funding information

Isbn identifier

Doi identifier

Previously Published Citation

Fairbank, Benjamin A. (1987). The use of presmoothing and postsmoothing to increase the precision of equipercentile equating. Applied Psychological Measurement, 11, 245-262. doi:10.1177/014662168701100303

Suggested citation

Fairbank, Benjamin A.. (1987). The use of presmoothing and postsmoothing to increase the precision of equipercentile equating. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/104061.

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.