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Varians (ragam) dari data 9,4,10,12,7,6 adalah ...

Varians (ragam) dari data 9,4,10,12,7,6 adalah ...

  1. 2,33

  2. 6,00

  3. 6,33

  4. 7,00

  5. 7,33

Jawaban:

Rata-rata data tersebut:

top enclose x equals fraction numerator 9 plus 4 plus 10 plus 12 plus 7 plus 6 over denominator 6 end fraction equals 8

Rumus ragam atau varians,

S squared equals fraction numerator left parenthesis x subscript 1 minus top enclose x right parenthesis squared plus midline horizontal ellipsis plus left parenthesis x subscript n minus top enclose x right parenthesis squared over denominator n end fraction  m a k a comma  S squared equals fraction numerator left parenthesis 9 minus 8 right parenthesis squared plus left parenthesis 4 minus 8 right parenthesis squared plus left parenthesis 10 minus 8 right parenthesis squared plus left parenthesis 12 minus 8 right parenthesis squared plus left parenthesis 7 minus 8 right parenthesis squared plus left parenthesis 6 minus 8 right parenthesis squared over denominator 6 end fraction  S squared equals fraction numerator 1 plus 16 plus 4 plus 16 plus 1 plus 4 over denominator 6 end fraction equals 42 over 6 equals 7 comma 00

0

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