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4
5 → Q1
5
7 →→ Q2
7
8 → Q3
9
jangkauan = nilai tertinggi - nilai terendah
= 9 - 4 = 5
jangkauan interkuartil = Q3 - Q1
= 8 - 5 = 3
2. urutan data :
12
15 → Q1
16
→→→ Q2 = (16+17)/2 = 33/2 = 16,5
17
18 → Q3
21
jangkauan = 21 - 12 = 9
jangkauan interkuartil = 18 - 15 = 3