Simpangan kuartil dari 10,5,6,7,7,8,4,9,8,7

Urutkan dahulu... 4,5,6,7,7,7,8,8,9,10
n=10

Quartil atas: Q3= 3(n+1)/4
=3(10+1)/4
=3(11)/4
=33/4=8,25

Quartil bawah: Q1= (n+1)/4
=(10+1)/4
=11/4
=2,75
Simpangan kuartil: Qd= ½(Q3-Q1)
=½(8,25-2,75)
=½(5.5)
=2,75