simpangan rata-rata dari 9, 9, 8, 10, 6, 7, 7, 8, 9, 7 adalah. . . .

Mapel : Matematika Wajib (Kelas X SMA)
Materi : Statistika
Indikator : Mencari simpangan rata - rata data tunggal

Langkah Penyelesaian dan Jawaban :

[tex]\bar{x} = \frac{9+9+8+10+6+7+7+8+9+7}{10} \\ \bar{x} = \frac{80}{10} \\ \bar{x} = 8 \\\\\\ SR = \frac{|x_1 - \bar{x}|+...+ |x_n - \bar{x}|}{n} \\\\ SR = \frac{3|9 - 8| + 2|8 - 8| + |6 - 8| + |10 - 8| + 3|7 - 8|}{10}\\\\ SR = \frac{3|1| + 2|0| + |- 2|+|2| + 3|- 1|}{10}\\\\ SR = \frac{3 + 0 + 2+ 2 + 3}{10} \\\\ SR = \frac{10}{10}\\\\ \therefore \boxed{SR = 1}[/tex]