simpangan baku dari data 7,5,6,5,7,6,8,4,8,4,6

Mapel : Matematika
Kelas : XI SMA
Bab : Statistika

Pembahasan :
simpangan baku =√∑(xi-x)² / n

x = (7 + 5 + 6 + 5 + 7 + 6 + 8 + 4 + 8 + 4 + 6)/11
= 66 / 11
= 6

simpangan baku =√[(7 - 6)² + (5 - 6)² + (6 - 6)² + (5 - 6)² + (7 - 6)² + (6 - 6)² + (8 - 6)² + (4 - 6)² + (8 - 6)² + (4 - 6)² + (6 - 6)²/11]
= √[(1 + 1 + 0 + 1 + 1 + 0 + 2 + 2 + 2 + 2 + 0)/11]
= √(12/11)
= 1,09
= 1