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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The following data represent scores on a 15 point aptitude test: 8,10,15,12,14,and 13.
-Subtract 5 from every observation and complete the sample variance for the original data and the new data.
Selection Differences
Differences in the type of subjects who make up each group in an experimental design; this situation occurs whenparticipants elect which groupthey are to be assigned to.
Independent Variable
In experimental research, the factor that is altered by the scientist to observe how it affects a dependent variable.
Dependent Variable
A variable in an experiment that is expected to change in response to manipulations of the independent variable.
Regression Toward the Mean
The phenomenon that extreme scores or outcomes are likely to be followed by less extreme ones, moving closer to the average.
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