The Standard Error of a Proportion for Different Scores and Test Length
DOI
https://doi.org/10.7275/skqa-0z17
Abstract
This paper examines Smith’s (2003) proposed standard error of a proportion index associated with the idea of reliability as sufficiency of information. A detailed table indexing all of the standard error values affiliated with assessments that range from 5 to 100 items, where students scored as low as 50% correct and 50% incorrect to as high as 95% correct and 5% incorrect, calculated in increments of 1 percentage point, is presented, along with distributional qualities. Examples using this measure for classroom teachers and higher education instructors of assessment are provided. Accessed 19,072 times on https://pareonline.net from June 05, 2005 to December 31, 2019. For downloads from January 1, 2020 forward, please click on the PlumX Metrics link to the right.
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Recommended Citation
Walker, David A.
(2019)
"The Standard Error of a Proportion for Different Scores and Test Length,"
Practical Assessment, Research, and Evaluation: Vol. 10, Article 5.
DOI: https://doi.org/10.7275/skqa-0z17
Available at:
https://scholarworks.umass.edu/pare/vol10/iss1/5