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Psych research ch 12

QuestionAnswer
Correlation It does not imply causation. It tells us nothing about cause and effect.
Correlational research Intended to demonstrate the existence of a relationship between two variables but it does not determine cause-and-effect relationship.
Experimental research Demonstrates a cause and effect relationship between two variables.
Differential research Involves two groups of scores and focuses on the difference between groups but it does not determine cause-and-effect relationship
Positive relationship Two variables change in the same direction
Negative relationship Two variables change in opposite directions.
Linear relationship The data points in the scatter plot tend to cluster around a straight line.
Correlation (correlation coefficient) Measures and describes the relationship between two variables.
Coefficient of determination the squared value of a correlation
Statistical significance of a correlation The correlation is unlikely to have been produced by random variation.
Prediction A correlational study demonstrating a relationship between two variables
Regression The statistical process for using one variable to predict the other
The third variable problem Because two variables are related, does not mean that there must be a direct relationship between the two variables.
The directionality problem A correlational study does not establish a relationship of cause-and-effect.
Multiple regression a statistical procedure for studying multivariate relationships. Relationships can be described but not explained.
Created by: balperso2022
 

 



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