An algorithm for updating the means and variances of a norm group after each computer-assisted administration of a test is described. The algorithm does not require storage of the whole data set and provides for unlimited, continuous expansion of the test norms.
Get full access to this article
View all access options for this article.
References
1.
Angoff, W. H.Scales, norms, and equivalent scores. In R. L. Thorn-dike (Ed.) Educational Measurement. Washington, D. C.: American Council on Education, 1971, 508-600.
2.
Clarke, M. R. B.Updating mean and dispersion matrix. Journal of Royal Statistical Society, 1971, 20, 206-209.
3.
Cronbach, L. J.Essentials of psychological testing (3rd ed.). New York : Harper & Row, 1970.
