Correlation Review

Front

What is a variable that has an effect on the outcome of a study but was not part of the investigation?

Back

Lurking Variable

Front

Rank these scatter plots according to the intensity of the correlation represented, from weakest to strongest: 1, 2, 3, 4.

Back

1, 3, 4, 2

Front

What is the term for the predictor variable that goes on the x-axis?

Back

Explanatory Variable

Front

What do you call a value much greater or much less than the others in a data set?

Back

Outlier

Front

What kind of correlation is represented when there is no relationship between the variables?

Back

No Correlation

Front

What is the term for the variable that is measured in response to changes in the explanatory variable?

Back

Response Variable

Front

What type of correlation is indicated when both variables increase together?

Back

Positive Correlation

Front

What type of correlation is indicated when one variable increases while the other decreases?

Back

Negative Correlation

Front

What is the purpose of a scatter plot in correlation analysis?

Back

To visually represent the relationship between two variables.

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation between the variables.