- Mean (साधारण औसत) - Formula: \mathrm{Mean}=\frac{\mathrm{Sum\ of\ all\ observations}}{\mathrm{Number\ of\ observations}} - Example: Agar marks = 10, 20, 30 hain, to mean = \frac{10+20+30}{3}=20. #competition #maths #rrb #education #boardexam #theclutcheducationadda1
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