ERIC Number: EJ630339
Record Type: Journal
Publication Date: 2001
Reference Count: N/A
Variability of Estimated Variance Components and Related Statistics in a Performance Assessment.
Gao, Xiaohong; Brennan, Robert L.
Applied Measurement in Education, v14 n2 p191-203 2001
Studied the sampling variability of estimated variance components using data collected over several years for a listening and writing performance assessment and evaluated the stability of estimated measurement precision. Results indicate that the estimated variance components varied from one year to another and suggest that the measurement precision projected by a generalizability study may not be fully realized in an actual decision study. (SLD)
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A