Berapakah pernyataan yang benar?

<p>Jawaban: 1</p><p>&nbsp;</p><p>Konsep:</p><p>Jangkauan = Nilai maksimum - Nilai minimum</p><p>Jangkauan antar kuartil = Q3 - Qi</p><p>Median = Nilai tengah</p><p>&nbsp;</p><p>Pembahasan:</p><p>e = 3a&nbsp;</p><p>b = a + 1</p><p>a = c - 5 → c = a + 5</p><p>d = e - 2 → d = 3a - 2</p><p>&nbsp;</p><p>Rata - rata = 17</p><p>(a + b + c + d + e)/5 = 17</p><p>(a + (a + 1) + (a + 5) + (3a - 2) + 3a)/5 = 17</p><p>(a + (a + 1) + (a + 5) + (3a - 2) + 3a) = 17 × 5</p><p>(9a + 4) = 85</p><p>9a = 85 - 4</p><p>9a = 81</p><p>a = 9</p><p>&nbsp;</p><p>Maka bilangannya adalah:</p><p>a = 9</p><p>b = 9 + 1 = 10</p><p>c = 9 + 5 = 14</p><p>d = 3(9) - 2 = 25</p><p>e = 3(9) = 27</p><p>&nbsp;</p><p>9 &nbsp; &nbsp; &nbsp; 10 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;14 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 25 &nbsp; &nbsp; &nbsp; &nbsp;27</p><p><strong>&nbsp; &nbsp; &nbsp;Q1 &nbsp; &nbsp; &nbsp; &nbsp; Median &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Q3</strong></p><p>&nbsp;</p><p><strong>Kuartil pertama (Q1) = (9 + 10)/2 = 9,5</strong></p><p>Kuartil ketiga (Q3) = (25 + 27)/2 = 26</p><p><strong>Jangkauan = 27 - 9 = 18</strong></p><p><strong>Jangkauan antar kuartil = Q3 - Q1 = 26 - 9,5 = 16,5</strong></p><p><strong>Median = 14 (Faktornya = 1, 2, 7, 14 → mempunyai 2 faktor prima yaitu 2 dan 7)</strong></p><p>&nbsp;</p><p>Jadi, jumlah pernyataan yang benar adalah 1.</p>