4.6 Unit 4 Review

This unit covers the topics of data collection methods and potential sources of bias. We learned about experiments, observational studies, sample surveys and censuses. Several potential errors and sources of bias were introduced. We also learned how to use a random digit table to make random selections, how to outline experimental designs, and how to calculate and state 95% confidence intervals.

You should go back and read through each of the sections in this unit, paying careful attention to all of the new terms in bold. This will help you to do problem 1 from your homework assignment.