Almost every survey headline comes with a small line underneath. Margin of error, plus or minus 3 percentage points. Readers take it as a measure of how accurate the survey is. It isn't, or not quite. It measures one specific kind of error, and often not the largest one. The margin of error describes sampling error. If you draw a random sample of people from a population, you … [Read more...] about Survey Margin of Error Explained, What Plus or Minus 3 Points Covers and What It Leaves Out
taking uncertainty out of decision making
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Market Analysis
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