Pertanyaan

Simpangan rata-rata dari data 2, 6, 5, 4, 8, 5 adalah ....

1,23
1,33
2,67
3,33
3,67

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Pembahasan

Rata-rata dari data di atas adalah: Rumus simpangan rata-rata SR

Rata-rata dari data di atas adalah:

$top enclose x space equals fraction numerator left parenthesis 2 plus 6 plus 5 plus 4 plus 8 plus 5 right parenthesis over denominator 6 end fraction equals 5$

Rumus simpangan rata-rata SR

$S R equals fraction numerator vertical line x subscript 1 minus top enclose x vertical line plus vertical line x subscript 2 minus top enclose x vertical line plus midline horizontal ellipsis plus vertical line x subscript n minus top enclose x vertical line over denominator n end fraction S R equals fraction numerator vertical line 2 minus 5 vertical line plus vertical line 6 minus 5 vertical line plus vertical line 5 minus 5 vertical line plus vertical line 4 minus 5 vertical line plus vertical line 8 minus 5 vertical line plus vertical line 5 minus 5 vertical line over denominator 6 end fraction S R equals fraction numerator 3 plus 1 plus 0 plus 1 plus 3 plus 0 over denominator 6 end fraction S R equals 8 over 6 S R equals 1 comma 33$