simpangan rata rata dari data 6,5,8,8,6,5,7,4 adala

data 6 5 8 7 6 5 7 4

X = (6+5+8+7+6+5+7+4) / 8
X = 48 / 8
X = 6

maka

SR = 2(6-6)+2(5-6)+2(7-6)+(8-6)+(4-6) / 8

SR = 0+2+2+2+2 / 8

SR = 8/8

SR = 1

semoga berguna +_+