Spearman–Brown reliability formulaCharles Edward Spearman was born in London on September 10, 1863, as the third son of a minor aristocratic family. By his own admission (Spearman 1930 ), Charles was no academi
→斯布公式(Spearman-Brown formula):预测增加或减少题目后,测验信度的改变 → Cronbach’s Alpha系數(考虑内容異质性 … blog.ncue.edu.tw|基于14个网页 3. 斯布校正公式 87.斯布校正公式(Spearman-Brown formula):求得n=2, 所以 20*2=40,40-20=20--->即为答案。
Spearman-Brown formula [¦spir·mən ′brau̇n ‚fȯr·myə·lə] (statistics) A formula to estimate the reliability of a testntimes as long as one for which reliability is known; the tests must be comparable in all aspects other than size. ...
and R.H. Williams, Generalization of the Spearman- Brown Formula for Test Reliability: The Case of Nonindependence of True Scores and Error Scores. British Journal of Mathematical and Statistical Psychology, 1966. 19(2): p. 271-274.Zimmerman, D. W. and Williams, R. H. 1966 . ...
Spearman-Brown prophecy formulaCronbach's alphaClassical test theoryOBJECTIVES: There are similarities between the different forms of reliability, such as internal consistency (internal reliability) and interrater and intrarater reliability. Reliability coefficients that are based on classical test theory can...
reliabilitySpearman–Brown prophecy formulaitem samplingparallel measuresconvergenceIt is shown that the psychometric test reliability, based on any true-score model with randomly sampled items and uncorrelated errors, converges to 1 as the test length goes to infinity, with probability 1, assuming some...
Testing the Equality of Two Independent α Coefficients Adjusted by the Spearman-Brown Formula, Applied Psychological Measurement, Vol. 23, No. 4, pp. 363-370.Alsawalmeh Y M, Feldt L S. Testing The Equality of Independent Alpha Coefficient Adjusted for Test length [ J ]. Educational and ...
determine (a) whether the split-half method is a valid procedure for estimating the reliability of multiple trial physical performance tests, and (b) whether the Spearman-Brown prophecy formula will be an accurate predictor of the reliability of a physical performance test when its length is ...
In at least two situations, use of the Spearman-Brown prophesy formula yields overestimates of the interobserver reliability of composite scores. The appropriate formulas for estimating the interobserver reliability of composite scores, as well as efficient means of estimating the elements in these ...
The relationship of difficulty of a motor task to computed reliability with special reference to the Spearman-Brown prophecy formulaDudek, Frank J