Men are from mars, women are from gmail

October 22, 2009 in Data,Internet

ReadWriteWeb's coverage of a new study on webmail demographics contains one sentence that left me a little confused:

Gmail, for instance, includes more females (53%) than males (47%). If those were election poll results, we would call it "too close to call," but in terms of tens of thousands of users, these percentage point differences have meaning.

If a 53/47 outcome isn't clear when drawn from millions of election returns, how can it possibly be sufficient when taken from a sample measured only in the tens of thousands?

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