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13.Statistics
easy
સંખ્યાઓ $3, 4, 5, 6, 7 $ નું સરેરાશ વિચલન શોધો.
A
$1.2$
B
$2.4$
C
$1.8$
D
$3.2$
Solution
અહી $\,n\,\, = \,\,5,\,\,\,\bar x \,\, = \,\,5$
સરેરાશ વિચલન $ =\frac{\Sigma |x_i-\bar x|}{n}$
$ = \,\,\,\frac{1}{5}\,\,[|3\,\, – \,\,5|\,\, + \,\,|4\,\, – \,\,5|\,\, + \,\,|5\,\, – \,\,5|\,\, + \,\,|6\,\, – \,\,5|\,\, + \,\,|7\,\, – \,\,5|]\,\,\,\,\,\,\,\,\,$
$\, = \,\,\frac{1}{5}\,[2\,\, + \,\,1\,\, + \,\,0\,\, + \,\,1\,\, + \,\,2]\,\,\,\, = \,\,\frac{6}{5}\,\,\,\, = \,\,1.2$
Standard 11
Mathematics
