Lines of Best Fit

Front

What is a line of best fit?

Back

A line that best represents the data on a scatter plot, showing the trend of the data points.

Front

What does a positive association in a graph indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative association in a graph indicate?

Back

As one variable increases, the other variable decreases.

Front

What is the purpose of a line of best fit?

Back

To make predictions about future data points based on the trend of the existing data.

Front

What does it mean if a line of best fit does not pass through the origin?

Back

It indicates that the relationship between the variables does not start at zero.

Front

How can you determine if a line is a line of best fit?

Back

It should pass through the middle of the data points, minimizing the distance from all points.

Front

What is a scatter plot?

Back

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

Front

What does it mean if a line of best fit is steep?

Back

It indicates a strong relationship between the variables, with a larger change in the dependent variable for a change in the independent variable.

Front

What does it mean if a line of best fit is flat?

Back

It indicates a weak relationship between the variables, with little change in the dependent variable for a change in the independent variable.

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.