bgaimana cari median

Berat badan
36 - 45
46 - 65
66 - 75
76 - 85
86 - 95

Frekuensi
5
10
12
7
6

Fk ( frekuensi kumulatif )
5
15
27
34
40

Xii = 55,5
n = 40
Fk = 15
Fi = 12
P = 9

Me = Xii + ( n/2 - Fk ) / Fi . P
= 55,5 + ( 40/2 - 15 ) / 12 . 9
= 55,5 + ( 5 / 12 ) 9
= 55,5 + ( 0,416 ) 9
= 55,5 + 3,744
= 59,24