04-Gather Useful Data complete


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Unformatted text preview: nts and observational studies and provides good examples of each. You need to know about these ideas (control groups, placebos, blinding, matched‐pair designs, interacting variables, biases like the Hawthorne effect, and more – so read these sections! Where are we going? We have a population (a basket) that we cannot examine but we want to learn something about it ‐ so we will take a sample ‐ preferably it will be a random sample. We will use the sample to estimate the things we wanted to know about the population ‐ we wil...
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This document was uploaded on 02/25/2014 for the course STATS 250 at University of Michigan.

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