Standard Deviation 29. From the following figures, find the standard – InterviewSolution

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1.	Standard Deviation 29. From the following figures, find the standard deviation and the coefficient of variation:0-10 510-20 1020-30 2030-40 4040-50 3050-60 2060-70 1070-80 4
Answer» tion:Class Interval Mid Value (x) frequency (F) fx fx 2 30−40 35 3 105 3675 40−50 45 7 315 14175 50−60 55 12 660 36300 60−70 65 15 957 63375 70−80 75 8 600 45000 80−90 85 3 255 21675 90−100 95 2 190 18050n=∑f=50xˉ = n1Request: please FOLLOW me....And mark this answer as Brainiest answer... ∑fx i = 503082 =61.64Variance (σ 2 )= n1 ∑fx 2 −( xˉ ) 2 = 50202250 −(61.64) 2 =245.5104Standard deviation (σ)= 245.5104 =15.67

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