Question

Mention the important method of measuring dispersion and discuss their comparative merits.​

Answer 1

Explanation:

1) Numerical Methods : a) Methods of limits i) Range ii) Inter-quartile range iii) Percentile Range b) Methods of average deviation: i) Quartile Deviation ii) Mean Deviation iii) Standard Deviation (2) Graphic Method - Lorenz Curve : i) Range : The difference between the value of the smallest item and the value of the largest item of the series is called range. Range = Largest item – Smallest item

Co-efficient of Range = L - S/ L + S