Pertanyaan

Varians (ragam) dari data 6,9,7,5,4,5 adalah...

1,33
1,50
1,60
2,37
2,67

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Rata-rata data tersebut: Rumus ragam atau varians,

Rata-rata data tersebut:

$top enclose x equals fraction numerator 6 plus 9 plus 7 plus 5 plus 4 plus 5 over denominator 6 end fraction equals 6$

Rumus ragam atau varians,

$S squared equals fraction numerator open parentheses x subscript 1 minus top enclose x close parentheses squared plus... plus open parentheses x subscript n minus top enclose x close parentheses squared over denominator n end fraction m a k a comma S squared equals fraction numerator open parentheses 6 minus 6 close parentheses squared plus open parentheses 9 minus 6 close parentheses squared plus open parentheses 7 minus 6 close parentheses squared plus open parentheses 5 minus 6 close parentheses squared plus open parentheses 4 minus 6 close parentheses squared plus open parentheses 5 minus 6 close parentheses squared over denominator 6 end fraction S squared equals fraction numerator 0 plus 9 plus 1 plus 1 plus 4 plus 1 over denominator 6 end fraction equals 16 over 6 equals 2 comma 67$