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you forgot this one...

Fiction: Excel is a great tool for serious data analysis.

(see http://www.practicalstats.com/xlsstats/excelstats.html for an overview)

JD Long

Really great post. Thanks for walking through that. I run into this type of thing quite often when I work with my firm's marketing department. Their analysis often sets off my "faction sniffer" but sometimes it takes some real thinking to really pin point what the errors are.

I really appreciate the thoughtful and more statistical nature of this post. Well done.

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