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Varians(ragam) dari data 6, 11, 8, 7, 4, 6 adalah ...

Varians(ragam) dari data 6, 11, 8, 7, 4, 6 adalah ....

  1. 16 over 3

  2. 15 over 3

  3. 14 over 3

  4. 12 over 3

  5. 10 over 3

Jawaban:

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 6 plus 11 plus 8 plus 7 plus 4 plus 6 over denominator 6 end fraction equals 42 over 6 equals 7  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 i minus top enclose X right parenthesis squared over denominator n end fraction  sigma squared equals fraction numerator  left parenthesis 6 minus 7 right parenthesis squared plus left parenthesis 11 minus 7 right parenthesis squared plus left parenthesis 8 minus 7 right parenthesis squared plus left parenthesis 7 minus 7 right parenthesis squared plus left parenthesis 4 minus 7 right parenthesis squared plus left parenthesis 6 minus 7 right parenthesis squared over denominator 6 end fraction equals 28 over 6 equals 14 over 3

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