Descriptor
| Analysis of Covariance | 1 |
| Correlation | 1 |
| Error Patterns | 1 |
| Observation | 1 |
| Probability | 1 |
| Program Evaluation | 1 |
| Statistical Bias | 1 |
Source
Author
| Echternacht, Gary | 1 |
Publication Type
| Reports - Research | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Echternacht, Gary – 1976
The analysis of covariance is frequently used in observational studies to either adjust treatment comparisons for biases due to different distributions of extraneous variables or for improving the precison of the treatment comparisons. This paper discusses aspects that the researcher should keep in mind when planning such a study. In particular it…
Descriptors: Analysis of Covariance, Correlation, Error Patterns, Observation
