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【正】 1 测定某矿样中CaO含量时,得如下数据:37.45%,37.20%,37.50%,37.25%,37.30%,计算此结果的平均值、平均偏差和标准差,写出正式报告。解=37.45+37.20+37.50+37.25+37.30/5=37.34%=(sum from i=1 to n |d<sub>i</sub>|)/n=(0.11+0.14+0.04+0.16+0.09)/5=0.11%S=(sum from i=1 to n d<sub>i</sub&g