A ____ visually depicts a relationship between two variables.

A regression line

A researcher creates models of possible causal relationships in

A researcher wants to study change in student attitudes towards body piercing across their 4 years of high school. Which quasi-experimental design should she use?

Cohen (1988) has argued that a coefficient of determination of ___ or more indicates a strong association between two variables.

Both correlational designs and quasi-experiments are often higher in ____ than laboratory experiments.

The ____ of a correlation coefficient indexes its strength.

The ____ problem prevents us from drawing causal conclusions because two correlated variables affect each other.

Which of the following does not describe a correlational study?

____ estimates the amount of variability in scores on one variable that can be explained by another variable.

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