9 ms·

> Half of the population is below average intelligence By definition :)

• MaxBarraclough 5y ago
  Only if the distribution is symmetric. [0] Extra pedantic mode: if the population is an odd number, the number of below average intelligence will not equal the number of above average intelligence. [0] https://en.wikipedia.org/wiki/Symmetric_probability_distribution https://en.wikipedia.org/wiki/Symmetric_probability_distribu...
  • d1sxeyes 5y ago
    >if the population is an odd number, the number of below average intelligence will not equal the number of above average intelligence I'll leave counting as an exercise for the reader :D
  • TomSwirly 5y ago
    Not if there's exactly one person of exactly average intelligence. :-)
    • confidantlake 5y ago
      Or any odd number :)
      • MaxBarraclough 5y ago
        You're right that if the set is of {99,100,101} then of course 100 falls into neither category and each category has cardinality 1, but we're talking about real-valued variables, so I don't think that's a worry. I imagine it happens 'almost never' (except where n=1). [0] https://en.wikipedia.org/wiki/Almost_never https://en.wikipedia.org/wiki/Almost_never
    • MaxBarraclough 5y ago
      Good point :-P