Class 11 Maths Statistics Mean deviation about median

Continuous frequency distribution : Mean deviation about median

Finding Median is a challenge here.

Steps to find median:

Arrange data in ascending order.

Cumulative frequency is derived 

Class in which median lies is identified.

Formula is applied to get median.

Where N is the sum of frequencies, l, f, h and C are, respectively the lower limit , the frequency, the width of the median class and C the cumulative frequency of the class just preceding the median class

Once median is obtained, just apply Mean deviation formula.

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