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# n_0516 - Chapter 2 Two variable data analysis Chapter 2...

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Chapter 2 Section 2.1 and 2.2 1 Chapter 2 Two variable data analysis

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Chapter 2 Section 2.1 and 2.2 2 Finding relationships: Do SAT scores predict success in college? Does a parent’s education level predict a child’s success in school? Do higher speed limits increase the number of interstate accidents?
Chapter 2 Section 2.1 and 2.2 3 Response vs. Explanatory Variables Response variables – often called predictor or dependent variables. These variables measure the outcome of a study. Explanatory – often called independent or control variables. These variables explain the changes in a response variable. Response and Explanatory does not mean Cause and Effect

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4 How to find the relationship between two variables: Plot the data. The most common way to display the relation between two quantitative variables is a scatterplot. Study the picture: patterns and deviations. If a pattern appears to exist, summarize the
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n_0516 - Chapter 2 Two variable data analysis Chapter 2...

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