Journal ArticleDOI
A test of the hypothesis that cronbach's alpha or kuder-richardson coefficent twenty is the same for two tests
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Abstract:
An approximate statistical test is derived for the hypothesis that the reliability coefficients (Cronbach's α) associated with two measurement procedures are equal. Control of Type I error is investigated by comparing empirical sampling distributions of the test statistic with the theoretical model derived for it. The effect of platykurtosis in the test-score distribution on the test statistic is also considered.read more
Citations
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When the presence of creative coworkers is related to creativity: role of supervisor close monitoring, developmental feedback, and creative personality.
TL;DR: Converging results from the 2 field studies demonstrated that when creative coworkers were present, the less supervisors engaged in close monitoring, the more employees exhibited creativity.
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An Analysis of Data Quality: Professional Panels, Student Subject Pools, and Amazon's Mechanical Turk
TL;DR: The authors examines whether one popular Internet data souring trend is a good fit for social science disciplines, including advertising, and examines whether it can be used in the context of data collection using Internet based samples.
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Parent-school involvement and school performance: Mediated pathways among socioeconomically comparable African American and Euro-American families.
Nancy E. Hill,Stracie A. Craft +1 more
TL;DR: The authors examined the relation between parent-school involvement and early achievement and the mediated pathways were examined among socioeconomically comparable samples of African American and Euro-American kindergarten children and their mothers.
Journal ArticleDOI
Statistical Inference for Coefficient Alpha
TL;DR: In this article, the important aspects of the sampling theory for Cronbach's (1951) coefficient alpha, a widely used internal consistency coefficient, have been discussed, and the assumptions and deriva tions underlying the theory are discussed.
References
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Journal ArticleDOI
Coefficient alpha and the internal structure of tests.
TL;DR: In this paper, a general formula (α) of which a special case is the Kuder-Richardson coefficient of equivalence is shown to be the mean of all split-half coefficients resulting from different splittings of a test, therefore an estimate of the correlation between two random samples of items from a universe of items like those in the test.
Book
Introduction to Mathematical Statistics
TL;DR: In this article, the authors present a list of common distributions of probability and distribution of likelihood for Bayesian models. But they do not discuss the relation between distributions and normal models.
Journal ArticleDOI
The theory of the estimation of test reliability
G. F. Kuder,M. W. Richardson +1 more
TL;DR: In this paper, the Spearman-Brown formula is shown to be a special case of the general formulation of the problem of reliability and various approximations to this theoretical formula are derived, with reference to several degrees of completeness of information about the test and to special assumptions.
Journal ArticleDOI
Introduction to Mathematical Statistics.
TL;DR: This chapter discusses distributions in the context of Bayesian Statistics, which aims to clarify the role of randomness in the construction of statistical inference.
Journal ArticleDOI
The approximate sampling distribution of Kuder-Richardson reliability coefficient twenty
TL;DR: An approximation to the sampling distribution of Kuder-Richardson reliability formula 20 is derived, using its algebraic equivalent obtained through an items-by-subjects analysis of variance.