if xi's are the mid point of the class interval of a grouped data fi's are the corresponding frequencies and x is the mean , then sum of (fixi-x) is equal to
plz answer it tomorrow is my pre board of maths
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if xi's are the mid point of the class interval of a grouped data fi's are the corresponding frequencies and x is the mean , then sum of (fixi-x) is equal to
plz answer it tomorrow is my pre board of maths
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ok ok but best of luck for tommmorow