Scatter plot & best fit lines

Front

What is a line of best fit used for?

Back

To make predictions.

Front

What does a negative correlation indicate in a scatter plot?

Back

As one variable increases, the other variable decreases.

Front

What does a positive correlation indicate in a scatter plot?

Back

As one variable increases, the other variable also increases.

Front

What does no correlation mean in a scatter plot?

Back

There is no relationship between the two variables.

Front

How can you identify a line of best fit on a scatter plot?

Back

It is a straight line that best represents the data points.

Front

What is the purpose of using scatter plots?

Back

To visualize the relationship between two quantitative variables.

Front

What does the slope of the line of best fit represent?

Back

The rate of change between the two variables.

Front

If the line of best fit is horizontal, what does that indicate?

Back

There is no correlation between the variables.

Front

How do you determine the expected value from a scatter plot?

Back

By finding the corresponding value on the line of best fit for a given input.

Front

What is the first step in creating a scatter plot?

Back

Collect and organize the data.