题目48.(1.0分)一组数据均值100,离散系数0.3,则方差是()A. 11.1B. 30C. 900D. 333.348.(1.0分)一组数据均值100,离散系数0.3,则方差是()A. 11.1B. 30C. 900D. 333.3题目解答答案C. 900