Concepedia

David J. Woodruff

DJ

Statistics

Publications

9

Citations

732

H-Index

9

Active since

1951

Affiliations

American College Testing(Current)

American College of Financial Services

The American College

University of Iowa

David J. Woodruff is an author at American College Testing specializing in education, educational measurement, and item response theory.

Publications per year

1951–2004

9

Publications

9

Statistical Inference for Coefficient Alpha

Leonard S. Feldt, David J. Woodruff, Fathi A. Salih · Applied Psychological Measurement · 1987 · 518 citations · Full text

Natural Sciences, Educational Measurement, Psychology +13

Statistical Inference for

Leonard S. Feidt, David J. Woodruff, Fathi A. Sailh · Thorax · 1951 · 55 citations

Pharmacy, Health Services Administration, Pharmacoeconomics +13

Tests for Equality of Several Alpha Coefficients when their Sample Estimates are Dependent

David J. Woodruff, Leonard S. Feldt · Psychometrika · 1986 · 44 citations

Education, Biostatistics, Econometrics +5

High School Grade Inflation from 1991 to 2003

David J. Woodruff, Robert L. Ziomek · 2003 · 33 citations

Social Sciences, Economics, Secondary Education +8

Conditional Standard Error of Measurement in Prediction

David J. Woodruff · Journal of Educational Measurement · 1990 · 19 citations

Education, Educational Assessment, Educational Measurement +13

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