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Question
For grouped data, formula for arithmetic mean by direct method =
For grouped data, formula for arithmetic mean by direct method =
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Solution
The correct option is A sfX / sf
Arithmetic
mean refers to the average amount in a given group of data. There are many ways
to calculate arithmetic mean for grouped data like direct method where all the data are multiplied with their respective frequencies and then added up which are then divided by the summation of the frequencies or number of figures in the data in order to ascertain the mean. The formula is sfX/ sf where sfd is the summation
of frequency multiplied by X for all figures and sf is the frequency or the number of element in the
given data.
Arithmetic mean refers to the average amount in a given group of data. There are many ways to calculate arithmetic mean for grouped data like direct method where all the data are multiplied with their respective frequencies and then added up which are then divided by the summation of the frequencies or number of figures in the data in order to ascertain the mean. The formula is sfX/ sf where sfd is the summation of frequency multiplied by X for all figures and sf is the frequency or the number of element in the given data.
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