|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.