Group Heterogeneity And Pearson's r
| Autor: | Schuyler W. Huck |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
education.field_of_study
Correlation coefficient Group (mathematics) Applied Mathematics Sample (material) 05 social sciences Population 050401 social sciences methods 050301 education Education Correlation 0504 sociology Statistics Correlation analysis Developmental and Educational Psychology medicine Statistical analysis medicine.symptom education 0503 education Applied Psychology Mathematics Confusion |
| Zdroj: | Educational and Psychological Measurement. 52:253-260 |
| ISSN: | 1552-3888 0013-1644 |
| DOI: | 10.1177/0013164492052002001 |
| Popis: | For many who deal with correlation (as students, teachers, or applied researchers), the connection between group heterogeneity and the magnitude of Pearson's r is difficult to pin down. Confusion abounds because factors that increase score variability do not have a similar effect on r. Three such factors are considered in this paper, with the point made that an increase in ßr (and/or in ßy) can be associated with an increase or a decrease in r-or possibly with no change in r whatsoever! A helpful distinction is also drawn between (a) properties of the persons or objects that define one's population of interest and (b) properties of the numbers assigned to those persons or objects (or a sample of them) as a result of the measurement process. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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