Simpangan kuartil dari data 4,5,2,6,4,8,8,9,6,7,8 adakah

Q1 =x1/4. (n+1)
=x1/4. (11+1)
= x1/4. 12
=x3
=4

Q2 = x1/2. (n+1)
=x1/2. (11+1)
= x1/2. 12
=x6
=6

Q3 = x3/4. (n+1)
=x3/4. (11+1)
=x3/4. 12
=x9
=8

Qd= 1/2 (Q3-Q1)
=1/2 (8-4)
=1/2 (4)
=2