Simpangan kuartil dari data 4,6,5,7,8,7,9,8,5,4,3

Data terurut :
3, 4, [ 4 ] 5, 5, || 6 || 7, 7, [ 8 ] 8, 9

Q₁ = 4
Q₂ = 6
Q₃ = 8

Simpangan kuartil :
Qd = 1/2 (Q₃ - Q₁)
Qd = 1/2 (8 - 4)
Qd = 1/2 (4)
Qd = 2 ✔