Descriptor
| Analysis of Covariance | 3 |
| Comparative Analysis | 3 |
| Pretesting | 3 |
| Pretests Posttests | 3 |
| Statistical Analysis | 3 |
| Data Analysis | 2 |
| Individual Differences | 2 |
| Mathematical Models | 2 |
| Measurement Techniques | 2 |
| Predictor Variables | 2 |
| Raw Scores | 2 |
| More ▼ | |
Source
Publication Type
| Reports - Research | 2 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
| California Achievement Tests | 1 |
What Works Clearinghouse Rating
Download full textMarston, Paul T., Borich, Gary D. – 1977
The four main approaches to measuring treatment effects in schools; raw gain, residual gain, covariance, and true scores; were compared. A simulation study showed true score analysis produced a large number of Type-I errors. When corrected for this error, this method showed the least power of the four. This outcome was clearly the result of the…
Descriptors: Achievement Gains, Analysis of Covariance, Comparative Analysis, Error of Measurement
Marx, Thomas – 1973
When two groups, initially dissimilar, undergo different treatments, can subsequent differences be partitioned in such a way that the difference between the two treatments is unbiased? This is the central problem of this paper, and it is confronted by the examination of two levels of information using a Follow Through Evaluation. The first…
Descriptors: Achievement Tests, Analysis of Covariance, Analysis of Variance, Comparative Analysis
Williams, John D.; And Others – 1972
Two methods of reading instruction (homogeneous grouping and graded classes) are compared for 165 students in 8 rural North Dakota schools by raw gain scores, residual gain scores, and the analysis of covariance. (CK)
Descriptors: Analysis of Covariance, Classes (Groups of Students), Comparative Analysis, Correlation
