Across
- 4. assigneing participants to treatment conditions at random
- 8. the percentage of people who score below a particular score value
- 9. to elicit more useful information than respondents volunteered initially
- 13. a percentage or other descriptive statistic is calculated from population data
- 14. inferences that outcomes were caused by the independent variable rather than by confounding factors
- 17. used to determine a straight line fit to the data that minimized deviations from the line
- 18. method for identifying clusters of related items
- 21. prospective participants can voluntarily decide whether to take part in a study without risk of prejudicial treatment
- 22. subpopulation
- 23. specific query researchers want to answer in addressing the problem
- 24. instruct interviewers to skip to a specific question for a given response
- 25. explosing the same people to more than one condition
- 26. the collection of data once the phenomena under study are captured at a single time point
- 31. lack randomization but involve and intervention
- 32. the process of transforming data into symbols usually numbers
- 35. bond or connection between phenomena
- 36. differences between sample values and population values
- 38. the threat that arises from attrition in groups being compared
Down
- 1. designed to obtain information about the prevalence, distrubtion, and interrelations of phenomena within a population
- 2. studies designed to assess clinical interventions
- 3. not even researchers know participants' indentities
- 5. values that lie outside the normal range
- 6. assigning numbers to represent the amount of an attribute present in a person or object
- 7. the magnitude of the relationship between the research variables
- 10. reflect the ratio of two probabilities
- 11. the entire aggregation of cases in which a researcher is interested
- 12. refers to the ability to detect true relationships among variables
- 15. the pieces of information obtained in a study
- 16. refers to the number of observations free to vary about a parameter
- 19. the loss of participants after intial data collection
- 20. the extent to wchih evidence supports hypotheses about the dimensionality of a complex construct
- 27. a numeric score to place respondents on a continuum with respect to an attribute
- 28. the basic entity of the analysis
- 29. looks for searcher specified terms in text fields of a database record
- 30. method of integrating ideas about phenomena and their interrelationships
- 33. most frequently occuring score value in a distribution
- 34. indicate the normal values on the measure for a specified population and thus offer a good comparison
- 37. phenomenon on which to focus