Diketahui data 3,5,6,7,5,3,6 nilai simpangan baku data tersebut adalah.. A:√2 B:2 C:2√2 D:4 E:6

rata2=3+5+6+7+5+3+6/7
rata2=35/7=5

varians
=(3-5)²+(5-5)²+(6-5)²+(7-5)²+(5-5)²+(3-5)²+(6-5)²/7
=4+0+1+4+0+4+1/7
=14/7

simpangan baku
=✓varians
=✓2 ........jawaban A