simpangan baku dari data 5,6,7,10,11,12,14,15 adalah

Hmm
X = (5+6+7+10+11+12+14+15)/8 = 80/8
X = 10

S = √ (5 - 10)² + (6 - 10)² + (7 - 10)² + (10 - 10)² + (11 - 10)² + (12 - 10)² + (14 - 10)² + (15 - 10)² per √8
S = √ (-5)² + (-4)² + (-3)² + 0 + 1 + (2)² + (4)² + (5)² per √8
S = √ 25 + 16 + 9 + 0 + 1 + 4 + 16 + 25 per √8
S = √ 96 per √8
S = √12
S = 3.46