Varias dari data 2,2,3,4,6,7,8,8

Varias dari data 2,2,3,4,6,7,8,8

Rata – rata data = 40 ÷ 8 = 5

Varians = $frac{Jumlah(x - x_{rata-rata}) }{n - 1}$

Jawab =

= $frac{(5-2)+(5-2)+(5-3)+(5-4)+(6-5)+(7-5)+(8-5)+(8-5)}{8-1}$

= $frac{3+3+2+1+1+2+3+3}{7}$

= $frac{18}{7}$

Semoga membantu…