Simpangan rata-rata dari data: 7 8 10 5 7 10 10 6 8 9 adalah....

Rata rata
= ( 7 + 8 + 10 + 5 + 7 + 10 + 10 + 6 + 8 +9 ) : 10
= 80 : 10
= 8

Simpangan rata rata
= ( ( 7-8 ) + ( 8-8 ) + ( 10-8 ) + ( 5-8 ) + ( 7-8 ) +
( 10-8 ) + ( 10-8 ) + ( 6-8 ) + ( 8-8 ) + ( 9-8 ) ) : 10
= ( 1 + 0 + 2 + 3 + 1 + 2 + 2 + 2 + 0 + 1 ) : 10
= 14 : 10
= 1,4

Smoga membantu ^ ^
Maaf klo salah...