Mean dari data p-5, 12, p, 24, p+7, p+5 adalh 19. Berapakah median data di atas

Mean dari data p-5, 12, p, 24, p+7, p+5 adalh 19. Berapakah median data di atas

JAWAB

⇨Mean = [(p-5) + 12 + p + 24 + (p+7) + (p+5)]/6
⇨ 19 = (p-5 + 12 + p + 24 + p+7 + p+5)/6
⇨ 19 = (4p + 43)/6
⇨ 114 = 4p + 43
⇨ 71 = 4p
⇨ p = 71/4
⇨ p = 17,75

sehingga
◆ p = 17,75
◆ p - 5 = 17,75 - 5 = 12,75
◆ p + 7 = 17,75 + 7 = 24,75
◆ p + 5 = 17,75 + 5 = 22,75

Urutan data:
12 — 12,75 — 17,75 — 22,75 — 24 — 24,75

Median = (17,75+22,75)/2 = 40,5/2 = 20,25