8.11A, 8.5C IP Scatter Plots and Association

Front

What is a positive correlation?

Back

A relationship between two variables where, as one variable increases, the other variable also increases.

Front

What is a negative correlation?

Back

A relationship between two variables where, as one variable increases, the other variable decreases.

Front

What does a scatter plot represent?

Back

A graph that shows the relationship between two data sets.

Front

What is the correlation coefficient?

Back

A numerical measure of the strength and direction of a relationship between two variables.

Front

What does it mean if there is no correlation?

Back

There is no predictable relationship between the two variables.

Front

How can you identify a positive correlation in a scatter plot?

Back

The points on the scatter plot will slope upwards from left to right.

Front

How can you identify a negative correlation in a scatter plot?

Back

The points on the scatter plot will slope downwards from left to right.

Front

What does it mean if the correlation coefficient is close to 1?

Back

It indicates a strong positive correlation between the two variables.

Front

What does it mean if the correlation coefficient is close to -1?

Back

It indicates a strong negative correlation between the two variables.

Front

What is an example of a negative correlation?

Back

As the age of a car increases, its value decreases.