Read through section 5B in your book and answer the following questions.

1) Explain what selection bias is and why you should take it into account when analyzing data.

2) Explain what participation bias is and why you should take it into account when analyzing data.

3) Create your own example of a study that has a bias and explain what the bias is.

4) Explain what a confounding variable is.

Read through Guideline 6 on page 313 and Example 7 on page 314.

5) Why did answers change when the survey about tax cuts was rephrased?

6) Of the 8 guidelines listed in the section, which one do you think is most important to pay attention to and why?

7). Do you think it is possible to create a study where there really is no bias sampling done? How would you manage to create one?