For finding the mean value of the grouped data it is assumed that the frequency nbsp-of each class interval is not centred around its mid-point-FalseTrue

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Mean of Grouped Frequency Distribution by Direct Method

For finding t...

Question

For finding the mean value of the grouped data it is assumed that the frequency of each class interval is not centred around its mid-point.

False

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True

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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?

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

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