某样品测定六次,数据如下:40.15,40.14,40.13,40.14,40.17,40.14,它的平均值为()。 A: 40.15 B: 40.145 C: 40.16 D: 40.14
某样品测定六次,数据如下:40.15,40.14,40.13,40.14,40.17,40.14,它的平均值为()。 A: 40.15 B: 40.145 C: 40.16 D: 40.14
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某样品测定六次,数据如下:40.15,40.14,40.13,40.14,40.17,40.14,它的平均值为()。 A: 40.15 B: 40.145 C: 40.16 D: 40.14