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Big Ideas Math Algebra 1 A Bridge to Success

BI

Big Ideas Math Algebra 1 A Bridge to Success View details

4. Scatter Plots and Lines of Fit

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Exercise 3 Page 195

How do you choose where to draw a line of fit?

See solution.

Practice makes perfect

When considering a line of fit for a scatter plot, you should draw it as centrally as possible. The purpose of a line of fit is to show the general trend of the data so it should be close to as many points as possible.

After you have a line of fit, you can use it to state how strongly correlated the data is, whether the correlation is positive or negative, and even predict future data points. Ultimately, scatter plots and lines of fit are tools to model and predict data.

Subchapter links

Communicate Your Answer p.195

Monitoring Progress p.196-198

Exercises p.199-200