Thursday, July 14, 2011

Week 3 of 540 - Survey

This week we are starting to plan a survey where we can analyze the results. As mentioned last week, the hardest part will be in designing questions that do not bias the answers. We will need to select a question that will be interesting to the people that we can get to participate. Once we have that topic, we will need to design neutral questions that do not cause the participants to select one answer over another. Once we have the topic and questions, we then will need to administer the survey and analyze the results. This is where the real math begins, and where we can start using the science of statistics to interpret the answers.

WE also did more work this week to look at the differences between mean, median, and mode. Our homework really drove home the point that two data sets might have the same mean (average) but may in fact be completely different. One might have a very closely grouped set of data, and the other may have a huge range that happens to balance out to the same average. Usually you want more consistent results, although of course that depends on the questions you are trying to answer.

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