An investigation of the sampling distributions of equating coefficients
1996
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An investigation of the sampling distributions of equating coefficients
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1996
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Abstract
Using the characteristic curve method for dichotomously
scored test items, the sampling distributions of
equating coefficients were examined. Simulated data
for broad-range and screening tests were analyzed
using three equating contexts and three anchor-item
configurations in horizontal and vertical equating situations.
The results indicated that the sampling distributions
were bell-shaped and their standard deviations
were uniformly small. There were few differences in
the forms of the distributions of the obtained equating
coefficients as a function of the anchor-item configurations
or type of test. For the equating contexts studied,
the sampling distributions of the equating coefficients
appear to have acceptable characteristics, suggesting
confidence in the values obtained by the characteristic
curve method. Index terms: anchor items, characteristic
curve method, common metric, equating coefficients,
sampling distributions, test equating.
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Baker, Frank B. (1996). An investigation of the sampling distributions of equating coefficients. Applied Psychological Measurement, 20, 45-57. doi:10.1177/014662169602000104
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Baker, Frank B.. (1996). An investigation of the sampling distributions of equating coefficients. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/119061.
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