How do you round 961.625 to two decimal places? - Answers

961.62Some people advise you to round up 0.5. Others say round down. The problem with either approach is as follows:In the first caseIf the number is 0.0 you don't need to roundIf the number is 0.1, 0.2, 0.3 or 0.4 you round downIf the number is 0.5, 0.6, 0.7, 0.8 or 0.9 you round upSo 4 downs and 5 ups (and one no change).Net Result: you introduce an upward bias.In the second scenario, you introduce a downward bias through rounding.Possible solution:Round up from 0.5 half the time, round down the other half. That satisfies the bias problem but introduces another - that of reproducibility. If someone else were to look at your data would they round up/down the same way you did? Unlikely. You need a system which will round 0.5 up half the time and down half the time but where the decision is made for you.Hence the best solution is the answer given above: Round up or down so that the new last digit is even.