Across
- 2. plan specifies in advance how participants are to be selected and how many to include. (2 words)
- 4. something that varies.
- 7. in multiple regression, the error term, that is, unexplained variance.
- 10. In ___ trials, researchers hypothesize that the intervention is “superior” to the control condition.
- 11. the extent to which scores are free from measurement error.
- 12. a second aspect of a distribution’s shape.
- 13. group a group of participants whose performance on an outcome is used to evaluate the performance of the treatment group on the same outcome. (2 words)
- 15. a ____ hypothesis does not state the direction of the relationship.
- 16. risks no greater than those ordinarily encountered in daily life or during routine tests or procedures. (2 words)
Down
- 1. the degree to which an instrument is measuring the construct it purports to measure.
- 3. indicate the “normal” values on the measure for a specified population.
- 5. a basic principle that is believed to be true without proof or verification.
- 6. refers to processes occurring within participants during the course of the study as a result of the passage of time.
- 8. a written summary of evidence on a research problem. (2 words)
- 9. a method of integrating quantitative finding statistically.
- 13. the process of transforming data into symbols.
- 14. the parametric procedure for testing differences between means when there are three or more groups. (an acronym)