1. The following table gives the protein intake of 400 intake of 400 families. Find the Range Standard Deviation, Variance, Coefficient Variation. Mid- value (x) Protein intake/ Consumption unit Per day in grams 15-25 25-35 35-45 45-55 55-65 65-75 75-85 No. of Families (f) 30 40 100 110 80 30 10 d = x-A C df d²f

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