10筐橘子,以每筐15㎏为标准,超过的千克数记作正数,不足的千克数记作负数.标重的记录情况如下:+1,-0.5,-0.5

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  • 16㎏,14.5㎏,14.5㎏,14㎏,15.5㎏,14.5㎏,15.5㎏,15.5㎏,15.5㎏,14.5㎏

    平均15㎏