The mean deviation about median from the data 340,150,210,240,300,310,320 is
50
52.8
45
55
A
52.8
B
45
C
55
D
50
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Solution
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Arrange in increasing order 150,210,240,300,310,320,340 N=number of data = 7 median (M) =300 The mean deviation about median =150+90+60+0+10+20+407=52.857
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