diagram, persentil, desil, dan kuartil

SELANG KELAS BATAS KELAS TITIK TENGAH FREKUENSI

1.5 - 1.9 1.45 - 1.95 1.7 2
2.0 - 2.4 1.95 - 2.45 2.2 1
2.5 - 2.9 2.45 - 2.95 2.7 4
3.0 - 3.4 2.95 - 3.45 3.2 15
3.5 - 3.9 3.45 - 3.95 3.7 10
4.0 - 4.4 3.95 - 4.45 4.2 5
4.5 - 4.9 4.45 - 4.95 4.7 3








Tugas Persentil. Desil, dan Kuartil

P80 = (80/100) X 40 = 32
= 3.45 + (10/10 X 0.5)
= 3.45 + 0.5
= 3.95

Q3 = (75/100) X 40 = 30
= 3.45 + (8/10 X 0.4)
= 3.45 + 0.4
= 3.85

D4 = (40/100) X 40 = 16
= 2.95 + (9/15 X 0.5)
= 2.95 + 0.3
= 3.25