平均值修约时,是先把各个数多保留一位再修约,还是各个数不修约,直接对平均值修约?
对于先保留还是先修约2种结果不一致。比如,0.003763和0.003192修约到3位小数,先修约一下是0.0038和0.0032,平均后修约是0.004,如果直接计算平均后修约,是0.003
2024-04-24
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