Descriptor
| Control Groups | 1 |
| Correlation | 1 |
| Effect Size | 1 |
| Estimation (Mathematics) | 1 |
| Experimental Groups | 1 |
| Mathematical Formulas | 1 |
| Meta Analysis | 1 |
| Program Evaluation | 1 |
| Sample Size | 1 |
| Statistical Bias | 1 |
| Surveys | 1 |
| More ▼ | |
Source
| Journal of Experimental… | 1 |
Author
| Becker, Gilbert | 1 |
Publication Type
| Journal Articles | 1 |
| Reports - Research | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewedBecker, Gilbert – Journal of Experimental Education, 1986
This article discusses the circumstances under which unequal sample size in the two-group study can arise and result in an attenuated point-biserial correlation. Formulas are provided for correcting the coefficient either directly or through the mediation of relevant statistics found in studies where the coefficient itself is not reported.…
Descriptors: Control Groups, Correlation, Effect Size, Estimation (Mathematics)
