Line of Best Fit

Front

What is a line of best fit?

Back

A 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 determine the line of best fit on a scatter plot?

Back

The line of best fit is determined by visually inspecting the scatter plot and drawing a line that minimizes the distance between the line and all the data points.

Front

What does a positive slope in a line of best fit indicate?

Back

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

Front

What does a negative slope in a line of best fit indicate?

Back

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

Front

What does a slope of zero in a line of best fit indicate?

Back

A slope of zero indicates no relationship between the two variables; the line is horizontal.

Front

How can you use a line of best fit to make predictions?

Back

You can use the line of best fit to estimate the value of one variable based on the value of another variable by finding the corresponding point on the line.

Front

What is the purpose of a scatter plot?

Back

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

Front

What does it mean if the data points are closely clustered around the line of best fit?

Back

If the data points are closely clustered around the line of best fit, it indicates a strong correlation between the two variables.

Front

What does it mean if the data points are widely scattered around the line of best fit?

Back

If the data points are widely scattered, it indicates a weak correlation between the two variables.

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.