Quote:
Originally Posted by Andrew H.
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.
|
Exactly. Self-selection isn't randomization. That's why online polls are basically noise and nothing more.