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Question

The median class for the given data is

Height(in cm)Less than 140Less than 145Less than 150Less than 155Less than 160Less than 165No. of girls (cf)41129404651


A

145-150

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B

150-155

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C

155-160

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D

160-165

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Solution

The correct option is A

145-150


The given table can be written as:
Height(in cm)Less than 140140145145150150155155160160165No. of girls (cf)41129404651
Since there are a total of 51 observations, the median class is the one whose cumulative frequency is closest to and greater than 25.5. Thus, the class interval 145-150 is the required answer.


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