Pertanyaan

Varians (ragam) dari data 8, 5, 6, 9, 8 adalah ...

Ikuti Tryout SNBT & Menangkan E-Wallet 100rb

Habis dalam

Klaim

I. Roy

Master Teacher

Mahasiswa/Alumni Universitas Negeri Surabaya

Jawaban terverifikasi

Pembahasan

Rata-rata data tersebut: Rumus ragam atau varians, Maka,

Rata-rata data tersebut:

$x space ̅ equals fraction numerator 8 plus 5 plus 6 plus 9 plus 8 plus 6 over denominator 6 end fraction equals 7$

Rumus ragam atau varians,

$S squared equals fraction numerator left parenthesis x subscript 1 minus x bar right parenthesis squared plus midline horizontal ellipsis plus left parenthesis x subscript n minus x bar right parenthesis squared over denominator n end fraction$

Maka,

$straight S squared equals fraction numerator left parenthesis 8 minus 7 right parenthesis squared plus left parenthesis 5 minus 7 right parenthesis squared plus left parenthesis 6 minus 7 right parenthesis squared plus left parenthesis 9 minus 7 right parenthesis squared plus left parenthesis 8 minus 7 right parenthesis squared plus left parenthesis 6 minus 7 right parenthesis squared over denominator 6 end fraction straight S squared equals fraction numerator 1 plus 4 plus 1 plus 4 plus 1 plus 1 over denominator 6 end fraction equals 12 over 6 equals 2$