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Questions  

The mean deviation of the numbers 3, 4, 5, 6, 7 from the mean, is

a
25
b
5
c
1.2
d
0

detailed solution

Correct option is C

We have,    X¯=3+4+5+6+75=5∴   Mean deviation from the mean    =|3−5|+|4−5|+|5−5|+|6−5|+|7−5|5=2+1+0+1+25=1.2

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Following are the marks obtained by 9 students in a mathematics test:
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The mean deviation from the median is


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