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Problem: mean deviation about mean {{10,11,12,13,14},{3,12,18,12,3}} [ Calculator, Method and examples ]

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Your problem -> mean deviation about mean {{10,11,12,13,14},{3,12,18,12,3}}

 x(1) f(2) f*x(3)=(2)xx(1) |x-bar x|=|x-12|(4) f*|x-bar x|(5)=(2)xx(4) 10 3 30 2 6 11 12 132 1 12 12 18 216 0 0 13 12 156 1 12 14 3 42 2 6 --- --- --- --- --- -- n=48 sum f*x=576 -- sum f*|x-bar x|=36

Mean bar x=(sum f x)/n

=576/48

=12

Mean deviation of Mean
delta bar x = (sum f*|x - bar x|)/n

delta bar x = 36/48

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