ALPHA_CI

An interactive program that computes coefficient alpha and it 95% and 99% confidence intervals for items comprising a scale of measurement.

You input:

Your output:

To download (ftp) click on this link: ALPHA_CI

Citation information:

     Fleming, J. S. (2011). Alpha_CI: An interactive program to compute coefficient alpha, its standard error, and confidence interval. [Computer software.] Retrieved from: http://swppr.org.

References:

    Iacobucci, D., & Duhacheck, A. (2003). Advancing alpha: Measuring reliability with confidence. Journal of Consumer Psychology,
13, 478-487.

    van Zyl, J. M, Neudecker, H., & Nel, D. G. (2000). On the disctribution of the maximum likelihood estimator of Cronbach's alpha.
Psychometrika, 65, 271-280.

    Yuan, K. H., & Bentler, P. M. (2002). On robustness of the normal-theory based asymptotic distributions of three reliability
coefficient estimates. Psychometrika, 67, 251-259.