单项选择题
已知3个水果店香蕉的单价和销售额,则计算3个水果店香蕉的平均价格应采用()
A、几何平均数
B、加权调和平均数
C、加权算术平均数
D、简单算术平均数
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单项选择题
假如各个标志值都增加10个单位,其余条件不变,那么平均值()
A、不变
B、增加到原来的10倍
C、不能预期平均值的变化
D、增加10个单位
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单项选择题
Which of the following is true of a special indorsement?()
A、It is only considered valid if it includes words of negotiation
B、It requires the signature of the indorser to be valid
C、It can be negotiated just on delivery
D、It is considered a bearer instrument
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