# Example 7 - Chapter 15 Class 11 Statistics

Last updated at May 29, 2018 by Teachoo

Last updated at May 29, 2018 by Teachoo

Transcript

Example 7 Calculate the mean deviation about median for the following data : Median = đ + đīˇŽ2īˇ¯ â đļīˇŽđīˇ¯ Ãâ Where, đ = lower limits of median class N = sum of frequencies đ = frequency of median class C = Cumulative frequency of class before median class Here, đ = 20, N = 50, C = 13, â = 10, đ = 15 Median = đ + đīˇŽ2īˇ¯ â đļīˇŽđīˇ¯ Ãâ = 20 + 50īˇŽ2īˇ¯ â13īˇŽ15īˇ¯ Ã 10 = 20 + 25 â13īˇŽ15īˇ¯ Ã 10= 20 + 12īˇŽ15īˇ¯ Ã 10 = 20 + 8 = 28 Finding mean deviation about Median = īˇŽīˇŽđđ đĨđ â Mīˇ¯īˇ¯īˇŽ īˇŽīˇŽđđīˇ¯īˇ¯

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