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Contoh Soal 1

Diketahui data berat badan

dari 10 siswa kelas XI IPS

56, 67, 57, 68, 59, 61, 78,

87, 88, 64

Hitunglah Statistik Lima

Serangkai !

Jawab :

(a). Data terbesar = 88

(b). Data terkecil = 56

(c). Untuk mencari Median,

kuartil bawah dan kuartil

atas data harus diurutkan

dulu.

Data diatas diurutkan

menjadi :

56, 57, 59,61, 64, 67, 68, 78, 87, 88

Q-1 Q-2 Q-3

(c). Median (Q-2) atau

Nilai Tengah

= (64

+ 67)/ )/2

= 65,5

(d). Kuartil Pertama (Q-1)

= 59

(e). Kuartil Ketiga (Q-3)

= 78

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