Authors: WELCH WW HUFFMAN D LAWRENZ F

Citation: Ww. Welch et al., THE PRECISION OF DATA OBTAINED IN LARGE-SCALE SCIENCE ASSESSMENTS - AN INVESTIGATION OF BOOTSTRAPPING AND HALF-SAMPLE REPLICATION METHODS, Journal of research in science teaching, 35(6), 1998, pp. 697-704

Authors: WELCH WW ANDERSON RE

Citation: Ww. Welch et Re. Anderson, THE PERFORMANCE OF PERFORMANCE ASSESSMENT IN A LARGE-SCALE STUDY OF COMPUTER EDUCATION, Journal of educational computing research, 11(2), 1994, pp. 107-119