Why do we round up 0.5000 to 1 instead of rounding down to 0?

Question

Why do we round up 0.5000 to 1 instead of rounding down to 0?

In: 12

Answer 1

Actually, we do! Sometimes. It’s a method called “Banker’s Rounding” (if memory serves), where 0.5 is rounded to the nearest even number. This balances out the rounding better.