反映一组观察值离散程度最好的指标是
A．几何均数B．四分位数间距C．中位数D．算术均数E．标准差
参考答案：E
— Oh, your kite is very nice.
— _____. [ ]
A. That's right
B. No, it's not nice
C. Yes, it is
D. Thank you
无综合授信额度可参照的单位，其月透支余额上限是多少?
