Simpangan baku dari dat 9, 10, 11, 8, 7, 6, 5 dan 8 adalah

Simpangan baku dari dat 9, 10, 11, 8, 7, 6, 5 dan 8 adalah

rata = (9+10+11+8+7+6+5+8)/8

=64/8 = 8

SB = I8-9I + I8-10I + I8-11I + I8-8I+I8-7I+8-6I+I8-6I+I8-8I/8

= 1 + 2 + 3 + 0+1+2+3+0 / 8

= 12/8

= 1,5

maaf jika salah

jadikan jawaban tercerdas (branliest answer)

$pi = frac{9 + 10 + 11 + 8 + 7 + 6 + 5 + 8}{8 } = frac{64}{8} = 8 \ \ sb = frac{ sqrt{ {(9 - 8)}^{2} + {(10 - 8)}^{2} + {(11 - 8)}^{2} + {(8 - 8)}^{2} + {(7 - 8)}^{2} + {(6 - 8)}^{2} + {(5 - 8)}^{2} + {(8 - 8)}^{2} } }{ 8} = \ .. = frac{ sqrt{ {(1)}^{2} + {(2)}^{2} + {(3)}^{2} + {(0)}^{2} + {( - 1)}^{2} + {( - 2)}^{2} + {( - 3)}^{2} + {(0)}^{2} } }{8} = \ .. = frac{ sqrt{1 + 4 + 9 + 0 + 1 + 4 + 9 + 0} }{8} = \ .. = frac{ sqrt{28} }{8} = sqrt{3.5} = 1,87 : dibulatkan : = 2$