Line of Best Fit

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. It shows the general direction of the data points.

Front

What does a positive association in a graph indicate?

Back

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

Front

What does a negative association in a graph indicate?

Back

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

Front

What does 'no association' mean in a graph?

Back

No association means that there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

How do you determine the line of best fit on a scatter plot?

Back

The line of best fit can be determined by visually inspecting the scatter plot and drawing a line that minimizes the distance from all points to the line.

Front

What is the equation of a line in slope-intercept form?

Back

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the change in y divided by the change in x (rise over run).

Front

What is the y-intercept of a line?

Back

Front

How can you identify the line of best fit from multiple options?

Back

To identify the line of best fit, look for the line that is closest to the majority of the data points on the scatter plot.

Front

What is a scatter plot?

Back

A scatter plot is a graph that displays values for typically two variables for a set of data, showing how much one variable is affected by another.