tolong jawab ya thank you

Materi Statistik

Data Diurutkan :
4 , 7 , 8 , 8 , 11 , 12 , 12 , 13 , 14 , 15 , 15 , 15 , 16 , 17 , 18 , 20 , 21 , 21 , 23 , 26

a. Jangkauan = 26 - 4 = 22
b. Q₁ = (11 + 12) / 2 = 23 / 2 = 11,5
Q₂ = (15 + 15) / 2 = 15
Q₃ = (18 + 20) / 2 = 38 / 2 = 19

c. Jangkauan interkuartil :
= Q₃ - Q₁
= 19 - 11,5
= 7,5