The preceding frequency distributions represent two groups of d

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The preceding frequency distributions represent two groups of data. Each of the data values is a multiple of 10.

Quantity A:The standard deviation of distribution C

Quantity B:The standard deviation of distribution D

A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.

答案：B

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