Line of Best Fit Review

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the trend of the data points.

Front

How do you calculate the line of best fit using a linear equation?

Back

You can calculate the line of best fit using the least squares method, which minimizes the distance between the data points and the line.

Front

What does a positive linear association indicate in a scatter plot?

Back

A positive linear association indicates that as one variable increases, the other variable also increases.

Front

What does a negative association indicate in a scatter plot?

Back

A negative association indicates that as one variable increases, the other variable decreases.

Front

What is an outlier in a scatter plot?

Back

An outlier is a point that is far outside the main cluster of points, which can affect the line of best fit.

Front

What does a nonlinear association look like in a scatter plot?

Back

A nonlinear association does not follow a straight line; the relationship between the variables may curve or change direction.

Front

What is the purpose of using a scatter plot?

Back

A scatter plot is used to visualize the relationship between two quantitative variables.

Front

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

Back

The slope of the line of best fit represents the rate of change of the dependent variable with respect to the independent variable.

Front

What does the y-intercept of the line of best fit represent?

Back

The y-intercept represents the value of the dependent variable when the independent variable is zero.

Front

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

Back

A strong correlation is indicated by points that are closely clustered around the line of best fit.