Line of Best Fit Review

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

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

Back

You can extend the line to estimate values for data points not explicitly shown in the scatter plot.

Front

What does a positive correlation indicate in a scatter plot?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation indicate in a scatter plot?

Back

As one variable increases, the other variable decreases.

Front

What does no association mean in a scatter plot?

Back

There is no clear trend or relationship between the two variables.

Front

How can you determine the best line of best fit visually?

Back

The line should have approximately equal numbers of points above and below it, minimizing the distance from all points.

Front

What is the purpose of a scatter plot?

Back

To visually display the relationship between two quantitative variables.

Front

What is interpolation in the context of a line of best fit?

Back

Estimating a value within the range of the data points using the line of best fit.

Front

What is extrapolation in the context of a line of best fit?

Back

Estimating a value outside the range of the data points using the line of best fit.

Front

What is the formula for calculating the slope of a line?

Back

Slope (m) = (change in y) / (change in x).