Simpangan rata-rata dari data 20, 25, 21, 23, 25, 26, 21 adalah …
Matematika
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Pertanyaan
Simpangan rata-rata dari data 20, 25, 21, 23, 25, 26, 21 adalah …
2 Jawaban
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1. Jawaban auradara1
20+25+21+23+25+26+21
= 161 ÷ 7
= 23 -
2. Jawaban therealcandra
[tex]x = \frac{20 + 21 + 21 + 23 + 25 + 25 + 26}{7} \\ x = \frac{161}{7} \\ x = 23 \\ \\ SR = \frac{ |20 - 23| + |21 - 23| + |21 - 23| + |23 - 23| + |25 - 23| + |25 - 23| + |26 - 23| }{7} \\ SR = \frac{3 + 2 + 2 + 0 + 2 + 2 + 3}{7} \\ SR = \frac{14}{7} = 2[/tex]