Simpangan kuartil dari data 4 3 4 10 8 6 7 9 12 adalah?

[tex]3 \: 4 \: 4 \: 6 \: 7 \: 8 \: 9 \: 10 \: 12 \\ n = 9 \\ Q1 = \frac{(n + 1)}{4} = \frac{10}{4} = data \: ke \: 2.5 \\ Q1 = \frac{4 + 4}{2} = \frac{8}{2} = 4 \\ Q3 = \frac{3(n + 1)}{4} = \frac{3(10)}{4} = data \: ke \: 7.5 \\ Q3 = \frac{9 + 10}{2} = \frac{19}{2} = 9.5 \\ \\ simpangan \: kuartil \\ Qd = \frac{1}{2} (Q3 - Q1) \\ Qd = \frac{1}{2} (9.5 - 4) \\ Qd = \frac{1}{2} (5.5) \\ Qd = 2.75[/tex]
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