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Example 7 - Calculate mean deviation about median - Class 11 - Mean deviation about median - Continuous frequency distibution

Example 7 - Chapter 15 Class 11 Statistics - Part 2
Example 7 - Chapter 15 Class 11 Statistics - Part 3


Transcript

Example 7 Calculate the mean deviation about median for the following data : Median = 𝑙 + 𝑁﷮2﷯ − 𝐶﷮𝑓﷯ ×ℎ Where, 𝑙 = lower limits of median class N = sum of frequencies 𝑓 = frequency of median class C = Cumulative frequency of class before median class Here, 𝑙 = 20, N = 50, C = 13, ℎ = 10, 𝑓 = 15 Median = 𝑙 + 𝑁﷮2﷯ − 𝐶﷮𝑓﷯ ×ℎ = 20 + 50﷮2﷯ −13﷮15﷯ × 10 = 20 + 25 −13﷮15﷯ × 10= 20 + 12﷮15﷯ × 10 = 20 + 8 = 28 Finding mean deviation about Median = ﷮﷮𝑓𝑖 𝑥𝑖 − M﷯﷯﷮ ﷮﷮𝑓𝑖﷯﷯

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.