Experts plzz answer this

Experts plzz answer this aeV1ation. (Mean = 28.4 years: Standard dev'ation 5.66 years) The following table gives the weights of one hundred persons. Compute the coefficient ot dispersion by the method of limits. Class-interval No. ofpersons 40-45 45-50 50-55 55-60 60-65 65-70 70-75 75-80 80-85 85-90 16 17 9 9 8 14 8 13 4 2 {Range = 50 kg. Coefficient of range -0.384)

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