Exploring bivariate numerical data

Lessons
Introduction to scatterplots
Correlation coefficients
Quiz
5 questions
Introduction to trend lines
Least-squares regression equations
Assessing the fit in least-squares regression
More on regression

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About this unit
We use scatter plots to explore the relationship between two quantitative variables, and we use regression to model the relationship and make predictions. This unit explores linear regression and how to assess the strength of linear models.