4. Chapter 9 Scatter Plots and Data Analysis LESSON 1 SCATTER PLOTS AND ASSOCIATION

5. Scatter Plots and Association  I can construct a scatterplot.  I can describe the association, if any, among the observed data.  I can construct and interpret a scatterplot.  8.11(A)

6. Vocabulary Bivariate data Scatter plot Positive association Negative association No association Linear association Non-linear association

7. Scatter Plots and Association Data with two variables, or pairs of numerical observations, are called bivariate data. A scatter plot shows the relationship between bivariate data graphed as ordered pairs on a coordinate plane.

8. Scatter Plots and Association

10. Two sets of data have a linear association when the data points lie close to a line. When data points do not lie close to a line, the data have a non-linear association.

11. Scatter Plots and Association

12. Clusters or outliers can also be identified.

13. Scatter Plots and Association Variable Association – what is the relationship between the variables? Linear Association – is it linear or non- linear? Are there clusters or outliers?

14. Scatter Plots and Association