varians data 2,5,7,6,4,5,8,3 adalah

=2+5+7+6+4+5+8+3= 40
----- = 5
8
= (2-5)"+(5-5)"+(7-5)"+(6-5)"+(4-5)"+(5-5)"+ (8-5)"+ (3-5)"
= -3"+0"+2"+1"+-1"+0"+3"+-2"
= 9+0+4+1+1+0+9+4
=28
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8