KUARTIL-UKURAN LETAK

KUARTIL-UKURAN LETAK

Catatan :  Jangkauan ( J ) = X max - X Min Jangkauan Antar Kuartil ( H ) = Q3 - Q1 Jangkauan Semua Interkuartil ( Qd ) / Simpangan Kuartil ( Qd ) = 1/2 ( Q3 - Q1 ) rataan Kuartil = 1/2 ( Q1 + Q3 ) Langkah ( L ) = 1/4 (Q1 + 2Q2 + Q3

Contoh :

1 , 2 , 2, 3, 5, 5, 7, 9, 10

Coretan :
1 = X min : 1
2 , 2 = Q1 : 2
5 , 5 = 5 yang pertama Q2 : 5
7 , 8 = Q3 = 8
10 = X max = 10

Soal :

• X max - Xmin = 1-10 = 9
• Q3 - Q1 = 8-2 = 6
• 1/2 ( Q3-Q1) = 1/2 ( 8-2) = 6 = 6/2 = 3
• 1/2 ( Q1 + Q3 ) = 1/2 ( 2+8 ) = 10 = 10/2 = 5
• 1/4 (Q1 + 2Q2 + Q3 ) 1/4 ( 2+2.5 + 8 ) = 20 = 20/4 = 5