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Pertanyaan

Simpangan baku data 50 , 50 , 60 , 60 , 70 , 70 adalah ....

Simpangan baku data  adalah  

  1. begin mathsize 14px style 10 over 3 square root of 6 end style 

  2. size 14px 8 over size 14px 3 square root of size 14px 6 

  3. size 14px 10 over size 14px 3 square root of size 14px 3 

  4. size 14px 7 over size 14px 3 square root of size 14px 6 

  5. size 14px 8 over size 14px 3 square root of size 14px 3 

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L. Indah

Master Teacher

Mahasiswa/Alumni Universitas Siliwangi

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah A.

jawaban yang benar adalah A.

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Pembahasan

Pembahasan
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Simpangan baku: Oleh karena itu, jawaban yang benar adalah A.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell top enclose straight x end cell equals cell fraction numerator 50 plus 50 plus 60 plus 60 plus 70 plus 70 over denominator 6 end fraction end cell row blank equals cell 360 over 6 end cell row blank equals 60 end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell begin inline style sum for blank of end style open parentheses straight x subscript i minus top enclose straight x close parentheses squared end cell equals cell 2 left parenthesis 50 minus 60 right parenthesis squared plus 2 left parenthesis 60 minus 60 right parenthesis squared plus 2 left parenthesis 70 minus 60 right parenthesis squared space end cell row blank equals cell 2 cross times left parenthesis negative 10 right parenthesis squared plus 2 cross times 0 squared plus 2 cross times 10 squared end cell row blank equals cell 200 plus 0 plus 200 end cell row blank equals 400 end table end style  

Simpangan baku:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row S equals cell square root of 1 over n begin inline style sum for blank of end style open parentheses x subscript i minus top enclose x close parentheses squared end root end cell row blank equals cell square root of 1 over 6 cross times 400 end root end cell row blank equals cell fraction numerator 20 over denominator square root of 6 end fraction end cell row blank equals cell fraction numerator 20 cross times square root of 6 over denominator square root of 6 cross times square root of 6 end fraction end cell row blank equals cell 20 over 6 square root of 6 end cell row blank equals cell 10 over 3 square root of 6 end cell end table end style 

Oleh karena itu, jawaban yang benar adalah A.

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