Question

how to answer this question what is the formula for this question

Answer 1

u may apply any of the 3
1)direct method- sumof fixi/sum of fi
2) step deviation methoda - ui=xi-a
then sum fiui/sumfi×h+A
3) short cut method -xi-a
then a+sumfidi/sumfi


hope these formulas may help u

Answer 2

hope you like it...

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