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f 3 3 7 2 2
fk 3 6 13 15 17
data ke 1~ 3 = 54
data ke 4 ~6 = 62
data ke 5~13 = 70
data ke 14~15 = 86
data ke 16~17 = 93
Jumlah Total frekuensi (n) = 17
Karena n ganjil
maka X₂ =
= 9
Q2 = data ke 9 = 70
X₃ = (n+1)
= 3/4 (18)
= 13,5
Q3 =
=
= 78
Q2+Q3 = 70+78 = 148