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Economics XI A,D

HOLIDAY HOMEWORK 

Mrs. Rekha Rajan, PGT(Eco)

 

UNIT: MEASURES OF DISPERSION & CORRELATION 

  1. Find range and coefficient of range from the following data:

    5, 7, 8, 8, 1, 0, 3, 9

  1. Find out mean deviation and coefficient of mean deviation from the following data:

      Size Frequency
      4 2
      6 4
      8 5
      10 31
      12 2
      14 1
      16 4

  

  1. Find Quartile Deviation and coefficient of Quartile Deviation :

      Age group No. of Students
      20-25 50
      25-30 70
      30-35 100
      35-40 118
      40-45 150
      45-50 120
      50-55 70
      55-60 60

  

  1. Calculate Karl Pearson’s coefficient of correlation using assumed mean method.

      X Y
      2 11
      4 12
      6 13
      8 14
      10 15

        

  1. Draw Lorenz curve:

      Income Firm A Firm B
      1000 3 4
      2000 8 8
      3000 10 7
      4000 7 4
      5000 2 5
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