simpangan baku dari data 12,9,10,8,6

Yg prtma cari dlu rata²
rata2 = 12+9+10+8+6/5
= 45/5
x = 9
S = √(x1 - x) / n - 1
= √[(12 - 9)² + ( 9-9)² + (10-9)² + (8-9)² + (6-9)²] / 5 - 1
= √ 9+0+1+1+9 / 4
= √20 / 4
= √5
= 2,23

Smga membntu, keep spirit