For calculating mean of grouped data, the mid point of each class interval is chosen to represent all the observations from that class.

True

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False

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Solution

The correct option is A
True

For calculating mean of grouped data, the midpoint of each class interval is chosen to represent all the observations from that class. The midpoint is called the class mark.

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For calculating mean of grouped data, the mid point of each class interval is chosen to represent all the observations from that class.

For calculating the mean of grouped data, the midpoint of each class interval is chosen to represent all the observations from that class.

State True or False : The class mark for a class interval while calculating the mean is its upper limit.

¯ x = a + \frac{\sum f_{i} d_{i}}{\sum f_{i}}

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