Bankers avrundning
Bankers avrundning (Half Even) är utformad för upprepade beräkningar där tie bias spelar roll.
Avrundande kalkylator
Ange ett nummer och välj dina avrundningspreferenser
|
🪄 Snabba exempel
📋 Hur det fungerar
Hur det fungerar
1
Steg 1
Round normally when the deciding digit is not an exact tie.
2
Steg 2
On exact ties at 5, check the kept digit parity.
3
Steg 3
Choose the even outcome to finish rounding.
📊 Exempel
Arbetade exempel
Examples focus on tie-value parity decisions.
| Ingång | Mål | Metod | Resultat |
|---|---|---|---|
| 2.5 | Närmaste helnummer | Omgång halv jämn (bankers) | 2 |
| 3.5 | Närmaste helnummer | Omgång halv jämn (bankers) | 4 |
| 6.25 | Närmaste tiondel (1 dp) | Omgång halv jämn (bankers) | 6.2 |
Tips
Vanliga misstag
Undvik dessa frekventa avrundningsfel vid validering av utdata.
- Assuming every tie rounds upward.
- Ignoring odd/even parity of the kept digit.
- Applying Half Even logic to non-tie digits unnecessarily.
- Using Half Up in workflows that require bias reduction.
❓ FAQ
Vanliga frågor
Why is this called banker's rounding?
It is widely used in finance and statistics to reduce cumulative rounding bias.
Does Half Even always round ties down?
No. Ties round to the nearest even outcome, which can be up or down.
When should Half Even be preferred?
Prefer it when repeated rounding should not drift systematically upward or downward.
Can Half Even be used for large numbers?
Yes. It works for all supported place values.