单项选择题

A．A businessman in a store.
B．A wander in the street.
C．Amateur detective.
D．A policeman with plain clothes.
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单项选择题
What is the passage mainly concerned with
A．Development and application of statistics.
B．Origin of descriptive statistics.
C．Limitations of inferential statistics.
D．Importance of statistics.
单项选择题
Describing and tabulating are associated with ______.
A．inferential statistics
B．descriptive statistics
C．theories of probability
D．inefficiency of counting
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