3. 设一组样本数据 $x_{1}, x_{2}, \ldots, x_{n}$ 的方差为 0.01 , 则数据 $10 x_{1}, 10 x_{2}, \ldots, 10 x_{n}$ 的方差为 $($ )
Gaokao · Math · previous-year question
- A.0.01
- B.0.1
- C.1
- D.10
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