Pertanyaan

Dari data 3, 4, 5, 5, 7, 9, 9 nilai simpangan rata-ratanya adalah …

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A. Nadhira

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

Jawaban terverifikasi

Pembahasan

Tentukan terlebih dahulu rata-ratanya, Simpangan rata-rata

Tentukan terlebih dahulu rata-ratanya,

$x with bar on top equals fraction numerator 3 plus 4 plus 5 plus 5 plus 7 plus 9 plus 9 over denominator 7 end fraction x with bar on top equals 42 over 7 equals 6$

Simpangan rata-rata

$S subscript R equals fraction numerator vertical line 3 minus 6 vertical line plus vertical line 4 minus 6 vertical line plus vertical line 5 minus 6 vertical line plus vertical line 5 minus 6 vertical line plus vertical line 7 minus 6 vertical line plus vertical line 9 minus 6 vertical line plus vertical line 9 minus 6 vertical line over denominator 7 end fraction S subscript R equals fraction numerator 3 plus 2 plus 1 plus 1 plus 1 plus 3 plus 3 over denominator 7 end fraction S subscript R equals 14 over 7 equals 2$