HW 2 (Unit 7): Correlation and Causation

Front

What is correlation?

Back

A statistical measure that describes the extent to which two variables change together.

Front

What is causation?

Back

A relationship where one event causes another event to occur.

Front

What does a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

As one variable increases, the other variable decreases.

Front

What is an outlier in a scatterplot?

Back

A point that is far outside the main cluster of points/ordered pairs.

Front

What does r = -0.89 indicate?

Back

A strong negative correlation between two variables.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.

Front

What is an example of correlation without causation?

Back

The number of ice cream sales and the number of drownings; both increase in summer but one does not cause the other.

Front

What is a scatterplot?

Back

A graph that uses dots to represent the values obtained for two different variables.

Front

What does it mean if there is no correlation?

Back

There is no predictable relationship between the two variables.