Pertanyaan

Varian (ragam) dari data 15, 13, 15, 12, 14, 15 adalah .......

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Klaim

Y. Laksmi

Master Teacher

Mahasiswa/Alumni Universitas Negeri Semarang

Jawaban terverifikasi

Pembahasan

$V a r i a n s space equals space S squared equals space fraction numerator sum from i equals 1 to n of left parenthesis x subscript i minus x with bar on top right parenthesis squared over denominator n end fraction equals fraction numerator left parenthesis x subscript 1 minus x with bar on top right parenthesis squared plus... plus left parenthesis x subscript n minus x with bar on top right parenthesis squared over denominator n end fraction C a r i space r a t a minus r a t a space t e r l e b i h space d a h u l u x with bar on top equals fraction numerator 15 plus 13 plus 15 plus 12 plus 14 plus 15 over denominator 6 end fraction x with bar on top equals 84 over 6 x with bar on top equals 14 S e h i n g g a S squared equals fraction numerator left parenthesis 15 minus 14 right parenthesis squared plus left parenthesis 13 minus 14 right parenthesis squared plus left parenthesis 15 minus 14 right parenthesis squared plus left parenthesis 12 minus 14 right parenthesis squared plus left parenthesis 14 minus 14 right parenthesis squared plus left parenthesis 15 minus 14 right parenthesis squared over denominator 6 end fraction S squared equals fraction numerator 1 plus 1 plus 1 plus 4 plus 0 plus 1 over denominator 6 end fraction S squared equals 8 over 6 S squared equals 4 over 3$