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

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

 x(1) Frequency (f)(2) f*x(3)=(2)xx(1) 10 3 30 11 12 132 12 18 216 13 12 156 14 3 42 --- --- --- n=48 sum f*x=576

Mean bar x = (sum fx)/n

=576/48

=12

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