Pertanyaan

Simpangan rata-rata dari data 15, 14, 12, 15, 13, 15 adalah ....

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F. Pratama

Master Teacher

Mahasiswa/Alumni Universitas Putra Indonesia YPTK Padang

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Pembahasan

Rata-rata dari data di atas yaitu Rumus simpangan rata-rata SR Maka,

Rata-rata dari data di atas yaitu

$top enclose x equals fraction numerator 15 plus 14 plus 12 plus 15 plus 13 plus 15 over denominator 6 end fraction equals 14$

Rumus simpangan rata-rata SR

$S R equals fraction numerator open vertical bar table row cell x subscript 1 minus top enclose x end cell end table close vertical bar plus open vertical bar table row cell x subscript 2 minus top enclose x end cell end table close vertical bar plus horizontal ellipsis plus open vertical bar table row cell x subscript n minus top enclose x end cell end table close vertical bar over denominator n end fraction$

Maka,

$S R equals fraction numerator open vertical bar table row cell 15 minus 14 end cell end table close vertical bar plus open vertical bar table row cell 14 minus 14 end cell end table close vertical bar plus open vertical bar table row cell 12 minus 14 end cell end table close vertical bar plus open vertical bar table row cell 15 minus 14 end cell end table close vertical bar plus open vertical bar table row cell 13 minus 14 end cell end table close vertical bar plus open vertical bar table row cell 15 minus 14 end cell end table close vertical bar over denominator n end fraction S R equals 6 over 6$