💎 On the importance of getting a representative sample (telephone survey to assess telephone ownership)

Particularly amusing is this recent telephone survey: a company wanted to find out, on average, how many phones (landline and cell) each household owned. When the results were tallied, the firm was amazed that not a single household claimed to have no phone. What a masterpiece.

Excerpt from: The Art of Thinking Clearly by Rolf Dobelli