甲、乙、丙、丁测定同一试样中的含铁量(真值为37.40%),四人4次的测定结果分别为:甲:37.38%,37.42%,37.47%,37.50%乙:37.21%,37.25%,37.28%,37.32%丙:36.10%,36.40%,36.50%,36.6

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问题 甲、乙、丙、丁测定同一试样中的含铁量(真值为37.40%),四人4次的测定结果分别为:甲:37.38%,37.42%,37.47%,37.50%乙:37.21%,37.25%,37.28%,37.32%丙:36.10%,36.40%,36.50%,36.64%丁:36.70%,37.10%,37.50%,37.90%,上述结果准确度和精确度均好,结果可靠的是(          )。

选项 A、甲
B、乙
C、丙
D、丁

答案A

解析
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