fi’s are the corresponding frequencies and x is the mean

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If xi’s are the mid points of the class intervals of grouped data, fi’s are the corresponding frequencies and x is the mean, then (fixi – x¯¯¯ ) is equal to
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Nov
If xi’s are the mid points of the class intervals of grouped data, fi’s are the corresponding frequencies and x is the mean, then (fixi – x¯¯¯ ) is equal to fi’s are the corresponding frequencies and x is the mean If xi’s are the mid points of the class intervals of grouped data then [...]
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