Page 1 - H.A Measures of dispersion (xi)
P. 1

SAI INTERNATIONAL SCHOOL


                                                   ECONOMICS



                                                        Class-XI


                                  [STATISTICS FOR ECONOMICS]


                                                   CHAPTER -10


                                      MEASURES OF DISPERSION


                                                       Module-59


               TOPIC


               Quartile deviation (continuous series)


               Coefficient of Q. D.


               Mean deviation (Individual series, discrete series)





               SHORT NOTES



                A quartile is a statistical term describing a division of observations into four
               defined intervals based upon the values of the data and how they compare to the
               entire set of observations. There are 3 values of Quartile .


               Q1 (lower quartile) , Q2 (equal to median) ,Q3 (upper quartile)
   1   2   3   4   5