simpangan baku dari data 4,6,7,8,9,10,12 adalah,,,

jawab


4,6,7,8,9, 10,12
n = 7
∑xi = 56
X= 8

s² = 1/7 [ (4-8)^2 +(6-8)^2+(7-8)^2 + (8-8)^2+(9-8)^2+(10-8)^2+(12-8)^2
s² = 1/7 (16+ 4 + 1+ 0+1+ 4 +16)
s² = 1/7 (42) = 6
simpangan baku = √s² = √6