Scatterplots and Correlation

Front

What is a scatterplot?

Back

A scatterplot is a type of graph that shows the relationship between two different things by plotting points on a grid.

Front

What does positive correlation mean?

Back

Positive correlation means that as one thing increases, the other thing also increases.

Front

What does negative correlation mean?

Back

Negative correlation means that as one thing increases, the other thing decreases.

Front

What does no correlation mean?

Back

No correlation means that there is no clear relationship between the two things.

Front

What is a trend line?

Back

A trend line is a line drawn on a scatterplot that shows the general direction of the data points.

Front

If the temperature goes up, what happens to ice cream sales?

Back

Ice cream sales usually go up when the temperature goes up. This is a positive correlation.

Front

What happens to beach visitors when the temperature increases?

Back

More beach visitors come when the temperature increases. This shows a positive correlation.

Front

How can you predict the number of pages in a book with 19 chapters?

Back

You can use a trend line from a scatterplot that shows the relationship between chapters and pages.

Front

What does it mean if a scatterplot shows a positive correlation with dinosaurs' weight and length?

Back

It means that as the length of the dinosaur increases, its weight also tends to increase.

Front

What is the purpose of a scatterplot?

Back

The purpose of a scatterplot is to visually show how two variables are related.