Steven D'Aprano <steve+pyt...@pearwood.info> added the comment:

I concur with Eric that this should be closed.

They're not "incorrect results", they are correct results, or at least *better* 
results. We did not invent the so-called Banker's Rounding technique, it has 
been the standard used by the American Society for Testing and Materials (ASTM) 
since 1940, and was in common use even before that.

https://infogalactic.com/info/Rounding#History

(Despite the name, there's very little evidence that it has been used by 
bankers.)

I am sorry that you expected different results and a worse rounding technique. 
The method of rounding taught in high schools is worse because it leads to 
bias. I'm sorry that you have been taught a poor rounding technique, but not 
everyone expects the same results you do.

See previous issue #41598 and likely others.

----------
nosy: +steven.daprano

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