The below table shows the profit made by a group of shops in mall. Then the median is
Profit per shop less than (%)102030405060No. of shops1230577794100
27.4
Cumulative frequencies are given by
C.IFrequencyCF0−10121210−20301820−30572730−40772040−50941750−601006Total100
N2=1002=50
CF nearest to 50 and greater than 50 is 57
∴ Median=l+(N2−CFf)×hMedian=20+(50−3027)×10
Median = 27.4