Quote:
Originally Posted by jbcohen
Since users self register with mobile read there is no problem with randomizing the population. Looks like the big four would be Kindle, Kobo, android and Sony.
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That's not how randomizing works. You need a random sample *that accurately reflects the relevant population* in terms of age, race, sex, education, income, etc.
MR readers aren't selected at random - they choose to join the site. And there's no reason to assume that they/we accurately reflect the e-book reader demographic.