TOLONG DONGGGG simpangan baku dari data 2,1,3,6,1,4,2,5 adalah...

→ Rata rata :
= 2 + 1 + 3 + 6 + 1 + 4 + 2 + 5 / 8
= 24 / 8
= 3

→ Simpangan Rata - rata :
= (2 - 3)² + (1 - 3)² + (3 - 3)² + (6 - 3)² + (1 - 3)² + (4 - 3)² + (2 - 3)² + (5 - 3)² / 8

= (-1)² + (-2)² + 0² + 3² + (-2)² + 1² + (-1)² + 2² / 8

= 1 + 4 + 9 + 4 + 1 + 1 + 4 / 8
= 24/8
= 3

→ Simpangan Baku :
= √ragam
= √3