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If x's are the mid-points of the class intervals of a grouped data.fl's are the corresponding frequencies and x is the mean,

asked Feb 9, 2018 in Mathematics by sforrest072 (157,439 points)
edited Mar 5, 2018 by faiz

If x's are the mid-points of the class intervals of a grouped data.fl's are the corresponding frequencies and x is the mean, then find ∑ fi (xi-x) .

1 Answer

answered Feb 9, 2018 by mdsamim (213,225 points)
selected Feb 9, 2018 by sforrest072

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If x's are the mid-points of the class intervals of a grouped data.fl's are the corresponding frequencies and x is the mean,

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