Question

Simpangan baku data 2,3,3,4,4,5,5,6 adalah.......

Answer 1

→ Rata Rata :
= 2 + 3 + 3 + 4 + 5 + 5 + 6 + 4 / 8
= 32 / 8
= 4

→ Ragam :
= (2 - 4)² + (3 - 4)² + (3 - 4)² + (4 - 4)² + (5 - 4)² + (5 - 4)² + (6 - 4)² + (4 - 4)² / 8

= (-2)² + (-1)² + (-1)² + 0² + 1² + 1² + 2² + 0 / 8

= 4 + 1 + 1 + 1 + 1 + 2 / 8
= 10 / 8
= 5 / 4

→ Simpangan Baku :
= √ragam
= √5/4
= 1/2√5
 Semoga membantu :) :)