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Varians (ragam) dari data 8, 8, 6, 6, 8, 12 adalah ....

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$R a t a minus r a t a colon top enclose X equals fraction numerator j u m l a h space d a t a over denominator b a n y a k space d a t a end fraction top enclose X equals fraction numerator 3 left parenthesis 8 right parenthesis plus 2 left parenthesis 6 right parenthesis plus 12 over denominator 6 end fraction equals 48 over 6 equals 8 V a r i a n s colon sigma squared equals fraction numerator sum from i equals 1 to n of left parenthesis x subscript 1 minus top enclose X right parenthesis squared over denominator n end fraction sigma squared equals fraction numerator 3 left parenthesis 8 minus 8 right parenthesis squared plus 2 left parenthesis 6 minus 8 right parenthesis squared plus left parenthesis 12 minus 8 right parenthesis squared over denominator 6 end fraction equals 24 over 6 equals 4$