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Simpangan rata-rata dari data 20,35,50,45,35,55 adalah ...

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$top enclose X equals fraction numerator j u m l a h space d a t a over denominator b a n y a k space d a t a end fraction top enclose X equals fraction numerator 20 plus 35 plus 50 plus 45 plus 35 plus 55 over denominator 6 end fraction equals 240 over 6 equals 40 S i m p a n g a n space r a t a minus r a t a S R equals fraction numerator sum from i equals 1 to n of open vertical bar x subscript i minus top enclose X close vertical bar over denominator n end fraction S R equals fraction numerator vertical line 20 minus 40 vertical line plus vertical line 35 minus 40 vertical line plus vertical line 50 minus 40 vertical line plus vertical line 45 minus 40 vertical line plus vertical line 35 minus 40 vertical line plus vertical line 55 minus 40 vertical line over denominator 6 end fraction equals 60 over 6 equals 10$