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 correlation mean?

Back

Correlation means how two things are related to each other. It can be positive, negative, or no correlation.

Front

What is positive correlation?

Back

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

Front

What is negative correlation?

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 relationship between the two things.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that shows the general direction of the data points in a scatterplot.

Front

Why do we use a line of best fit?

Back

We use a line of best fit to make predictions about one thing based on another.

Front

What can you tell from a scatterplot with a positive correlation?

Back

You can tell that as one variable increases, the other variable also tends to increase.

Front

What can you tell from a scatterplot with a negative correlation?

Back

You can tell that as one variable increases, the other variable tends to decrease.

Front

What does it mean if a scatterplot shows no correlation?

Back

It means that changes in one variable do not affect the other variable.