- Mean of each x set = 9
- Mean of each y set = 7.50
- Variance of each x set = 11
- Variance of each y set = 4.122-4.128

- Correlation of each set = 0.816
- Line of best fit for each set y = 3 + 0.5x

So you really see that they are very different sets of data. The lesson here is that your data cannot be fully described with either numerical or graphical analysis but really both are necessary.

## Classroom Connections

So how do you use this in class? This set is really best used for students who have had both single variable and two variable analysis. It really is a great set for tying together many of the concepts of data analysis.One thing that you can do is use this Desmos Activity Builder that walks students through the analysis. Keep in mind that students should be familiar with calculating mean and variance via a spreadsheet. They should also be familiar with using Desmos in terms of graphing functions and doing linear regression.

To analyze the data you (or your students) can use this Google Spreadsheet or CODAP file

Do you have ideas of any leading questions you would ask students? Do you have ways that you could use this dataset with students? Leave your ideas in the comment section.

## Resources

Info: https://en.wikipedia.org/wiki/Anscombe%27s_quartetThe Data: Google Sheet CODAP

The Activity: https://teacher.desmos.com/activitybuilder/custom/56364b6f58d09115172b6a3c

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