For calculating the 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 the 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 midpoint or 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.

Consider a grouped data distribution for which the mean is found by assumed mean method.

P = sum of the products of ‘d’ and frequency for each class interval

Here $d_{i} = x_{i} - A$

Q = total number of observations

A = assumed mean

M = mean of given grouped data distribution

Which of the following statements is true?

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