Descriptor
| Probability | 2 |
| Computer Software | 1 |
| Correlation | 1 |
| Data Analysis | 1 |
| Factor Analysis | 1 |
| Item Analysis | 1 |
| Mathematical Formulas | 1 |
| Rating Scales | 1 |
| Research Tools | 1 |
| Sample Size | 1 |
| Statistical Significance | 1 |
| More ▼ | |
Source
| Educational and Psychological… | 2 |
Author
| Aiken, Lewis R. | 1 |
| Terrell, Colin D. | 1 |
Publication Type
| Journal Articles | 2 |
| Numerical/Quantitative Data | 2 |
| Reference Materials - General | 1 |
| Reports - Research | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewedTerrell, Colin D. – Educational and Psychological Measurement, 1982
Tables are presented giving the critical values of the biserial and the point biserial correlation coefficients (when the null hypothesis assumes a value of zero for the coefficient) at the 0.05 and the 0.01 levels of significance. (Author)
Descriptors: Correlation, Mathematical Formulas, Probability, Research Tools
Peer reviewedAiken, Lewis R. – Educational and Psychological Measurement, 1985
Three numerical coefficients for analyzing the validity and reliability of ratings are described. Each coefficient is computed as the ratio of an obtained to a maximum sum of differences in ratings. The coefficients are also applicable to the item analysis, agreement analysis, and cluster or factor analysis of rating-scale data. (Author/BW)
Descriptors: Computer Software, Data Analysis, Factor Analysis, Item Analysis
