Unit 3 Review Questions (FINAL REVIEW)

Front

What is correlation in statistics?

Back

Correlation is a statistical measure that describes the strength and direction of a relationship between two variables.

Front

What is the range of correlation coefficients?

Back

The range of correlation coefficients is from -1 to 1.

Front

What does a correlation coefficient of 1 indicate?

Back

A correlation coefficient of 1 indicates a perfect positive linear relationship between two variables.

Front

What does a correlation coefficient of -1 indicate?

Back

A correlation coefficient of -1 indicates a perfect negative linear relationship between two variables.

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no linear relationship between two variables.

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

What does a strong positive correlation look like on a scatterplot?

Back

A strong positive correlation on a scatterplot appears as points that closely follow an upward trend.

Front

What does a strong negative correlation look like on a scatterplot?

Back

A strong negative correlation on a scatterplot appears as points that closely follow a downward trend.

Front

What is an explanatory variable?

Back

An explanatory variable is the variable that is manipulated or changed in an experiment to observe its effect on another variable.

Front

What is a response variable?

Back

A response variable is the variable that is measured in an experiment to see how it is affected by changes in the explanatory variable.