simpangan kuartil data 24,26,21,23,25,29,30,23,21,26 adalah

Data terurut:
21, [21, 23] 23, ||24, 25|| 26, [26, 29] 30

Diketahui:
Q₁ = (21 + 23)/2 = 22
Q₂ = (24 + 25)/2 = 24,5
Q₃ = (26 + 29)/2 = 27,5

Maka:
Qd = 1/2 (Q₃ - Q₁)
Qd = 1/2 (27,5 - 22)
Qd = 1/2 × 5,5
Qd = 2,75 ✔

↪Simpangan kuartil datanya: 2,75