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Enumerate the Rules in rounding off the numbers? - Answers

Suppose you need to round to n digits. Look at the (n+1)th digit. If it is 0 you do not need to round. You simply delete all digits after the nth. If it is 1, 2, 3 or 4 you again delete all digits after it. If it is 6, 7, 8 or 9 you increase the nth digit by 1 and delete all subsequent digits. If it is 5, then if n is even you delete all subsequent digits, if the nth digit is odd you add one and delete all subsequent digits. Statistically naive people recommend that 5 is always rounded up without realising that this introduced an upward bias.



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Enumerate the Rules in rounding off the numbers? - Answers

https://math.answers.com/math-and-arithmetic/Enumerate_the_Rules_in_rounding_off_the_numbers

Suppose you need to round to n digits. Look at the (n+1)th digit. If it is 0 you do not need to round. You simply delete all digits after the nth. If it is 1, 2, 3 or 4 you again delete all digits after it. If it is 6, 7, 8 or 9 you increase the nth digit by 1 and delete all subsequent digits. If it is 5, then if n is even you delete all subsequent digits, if the nth digit is odd you add one and delete all subsequent digits. Statistically naive people recommend that 5 is always rounded up without realising that this introduced an upward bias.



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https://math.answers.com/math-and-arithmetic/Enumerate_the_Rules_in_rounding_off_the_numbers

Enumerate the Rules in rounding off the numbers? - Answers

Suppose you need to round to n digits. Look at the (n+1)th digit. If it is 0 you do not need to round. You simply delete all digits after the nth. If it is 1, 2, 3 or 4 you again delete all digits after it. If it is 6, 7, 8 or 9 you increase the nth digit by 1 and delete all subsequent digits. If it is 5, then if n is even you delete all subsequent digits, if the nth digit is odd you add one and delete all subsequent digits. Statistically naive people recommend that 5 is always rounded up without realising that this introduced an upward bias.

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      Suppose you need to round to n digits. Look at the (n+1)th digit. If it is 0 you do not need to round. You simply delete all digits after the nth. If it is 1, 2, 3 or 4 you again delete all digits after it. If it is 6, 7, 8 or 9 you increase the nth digit by 1 and delete all subsequent digits. If it is 5, then if n is even you delete all subsequent digits, if the nth digit is odd you add one and delete all subsequent digits. Statistically naive people recommend that 5 is always rounded up without realising that this introduced an upward bias.

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