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Round 50.5 to the nearest whole number?

Updated: 4/28/2022
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βˆ™ 11y ago

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50.

Some, statistically naive people will say 51 but that is incorrect. 5 should always be rounded so that the preceding digit is even. If not, the rounding introduces an upward bias.

This is because you

  • do not round for 1 of the ten digits: 0
  • round down for 4 out ten digits: (1, 2, 3 and 4)
  • round up for 5 out of ten digits: (5, 6, 7, 8 and 9).

So you are rounding up more often than down. Hence bias.

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βˆ™ 11y ago
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Q: Round 50.5 to the nearest whole number?
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