ERIC - Search Results

Descriptor

Correlation	2
Matrices	2
Testing Problems	2
Academic Achievement	1
Achievement Gains	1
Analysis of Covariance	1
College Students	1
Computer Programs	1
Equated Scores	1
Error of Measurement	1
Estimation (Mathematics)	1
Goodness of Fit	1
Grades (Scholastic)	1
Longitudinal Studies	1
Mathematical Models	1
Maximum Likelihood Statistics	1
Measurement Techniques	1
Predictor Variables	1
Scaling	1
Scores	1
Statistical Analysis	1
Test Construction	1
Test Reliability	1
Test Theory	1
True Scores	1
More ▼

Source

Psychometrika

Author

Linn, Robert L.	1
Thayer, Dorothy T.	1
Werts, Charles E.	1

Publication Type

Reports - Research	2
Journal Articles	1

Education Level

Audience

Location

Laws, Policies, & Programs

Assessments and Surveys

What Works Clearinghouse Rating

Showing all 2 results Save | Export

Maximum Likelihood Estimation of the Joint Covariance Matrix for Sections of Tests Given to Distinct Samples with Application to Test Equating.

Peer reviewed

Thayer, Dorothy T. – Psychometrika, 1983

Estimation techniques for generating the covariance matrix for two new tests and an existing test without the necessity of any examinee having to take two complete tests is presented. An application of these techniques to linear, observed-score, test equating is presented. (Author/JKS)

Descriptors: Correlation, Equated Scores, Estimation (Mathematics), Matrices

Study of Academic Growth Using Simplex Models. Final Report.

Download full text

Werts, Charles E.; Linn, Robert L. – 1975

Forming a sequence covering the various aspects of the simplex model, four articles are presented here under the following titles: "A Simplex Model for Analyzing Academic Growth", "Analyzing Ratings With Correlated Intrajudge Measurement Errors", "The Correlation of States With Gain", and "The Reliability of…

Descriptors: Academic Achievement, Achievement Gains, Analysis of Covariance, College Students