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Varian (ragam) dari data 8, 5, 6, 9, 8, 6 adalah .......

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$V a r i a n s space equals space S squared equals space fraction numerator sum from i equals 1 to n of left parenthesis x subscript i minus x with bar on top right parenthesis squared over denominator n end fraction equals fraction numerator left parenthesis x subscript 1 minus x with bar on top right parenthesis squared plus... plus left parenthesis x subscript n minus x with bar on top right parenthesis squared over denominator n end fraction C a r i space r a t a minus r a t a space t e r l e b i h space d a h u l u x with bar on top equals fraction numerator 8 plus 5 plus 6 plus 9 plus 8 plus 6 over denominator 6 end fraction x with bar on top equals 42 over 6 x with bar on top equals 7 S e h i n g g a S squared equals fraction numerator left parenthesis 8 minus 7 right parenthesis squared plus left parenthesis 5 minus 7 right parenthesis squared plus left parenthesis 6 minus 7 right parenthesis squared plus left parenthesis 9 minus 7 right parenthesis squared plus left parenthesis 8 minus 7 right parenthesis squared plus left parenthesis 6 minus 7 right parenthesis squared over denominator 6 end fraction S squared equals fraction numerator 1 plus 4 plus 1 plus 4 plus 1 plus 1 over denominator 6 end fraction S squared equals 12 over 6 S squared equals 2$