(If you like the program send $10 to charity.)
Compute alpha from variances.
Compute reliability from the inter-item r.
Estimate the number items to achieve a desired reliability.
Determine the inter-item r from the reliability.
Graph or table the relationship between the number of items and the reliability.
Click on RELCOMP.EXE below to download. The program was recently revised by Alfred Xuan.
Program: RELCOMP.EXE 65K
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