Linear regression is a process of drawing a line through data in a scatter plot. The line summarizes the data, which is useful when making predictions.

Solve word problems about real world relationships that are given in formulas. Functions are written using function notation.

Solve word problems about real world relationships that are given in tables.

A complete CCSS Grade 8 Mathematics course that includes interactives in every lesson, plus videos, hands-on activities, and questions with immediate feedback. Every lesson also has specifically chosen 'Related Modalities' that teach the...

The correlation coefficient r measures the direction and strength of a linear relationship. Calculating r is pretty complex, so we usually rely on technology for the computations. We focus on understanding what r says about a scatterplot.