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What's on the worksheet
- A made-up middle school asked its students whether they are in the garden club and whether they eat a vegetable at lunch most days.
- A made-up skate park asked 120 riders what they ride and whether they wear knee pads.
- A made-up survey asked 115 students whether they have an older brother or sister and whether they would pick a sweet or a salty snack.
- A made-up school recorded which of its 160 students tried out for the school play.
- A made-up community center has 200 members:
- A made-up survey asked the students in one grade which hand they write with and whether they usually write with a pen or a pencil.
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The free lesson teaches it with worked examples and practice problems.
Association in a two way table and segmented bar graphs: the lesson ›More Chapter 2 worksheets: Exploring two-variable data
- 2.1Conditional relative frequencies
- 2.2Association in a two way table and segmented bar graphs
- 2.3Describing a scatter plot
- 2.4The correlation coefficient
- 2.5Interpreting a residual
- 2.6Making and reading residual plots
- 2.7Correlation from standardized values
- 2.8The least squares criterion and its line
- 2.9Slope from r and the spreads, and regression to the mean
- 2.10r squared and the standard deviation of the residuals
- 2.11Reading regression output
- 2.12Outliers, leverage and influential points
- 2.13Transforming to linearity: logs and exponential models
- 2.14Log-log transforms and power models