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Question
For grouped data, Arithmetic mean by Assumed Mean Method =
For grouped data, Arithmetic mean by Assumed Mean Method =
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Solution
The correct option is B A + sfd/sf
In assumed mean
method, any value can be taken as assumed mean whether it is there in the data
or not but it should be centrally located in the data so that to simply the big
figures in the data in order to ascertain mean of the given data through easy calculations.For grouped data,
the formula for assumed mean is A+ sfd/sf where A is the assumed mean, sfd is the
summation of frequency multiplied with X-A for all figures and sf is the summation of frequency or the number of
element in the given data.
In assumed mean method, any value can be taken as assumed mean whether it is there in the data or not but it should be centrally located in the data so that to simply the big figures in the data in order to ascertain mean of the given data through easy calculations.For grouped data, the formula for assumed mean is A+ sfd/sf where A is the assumed mean, sfd is the summation of frequency multiplied with X-A for all figures and sf is the summation of frequency or the number of element in the given data.
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