
Ukuran pemusatan data
Presentation
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
Dian Indrayani
Used 8+ times
FREE Resource
9 Slides • 1 Question
1
By Dian Indrayani
SMKN 18 Jakarta
Ukuran Pemusatan Data
2
UKURAN PEMUSATAN DATA
MEDIAN DAN MODUS
BY DIAN INDRAYANI
3
MEDIAN
Median adalah nilai tengah setelah
data diurutkan dari data yang terkecil
sampai terbesar
4
MEDIAN DATA TUNGGAL
Data Ganjil
Me = nilai data ke
𝑛+1
2
Contoh
Diketahui data 6, 4, 5, 2, 3. Tentukan
median
5
MEDIAN DATA KELOMPOK
RUMUS
Me = Tb +
𝑖
2𝑛−𝑓𝑘𝑢𝑚≤
𝑓𝑚𝑒𝑑
. 𝑃
Ket :
Tb = tepi bawah kelas median
fkum = frekuensi kumulatif sebelum kelas median
fmed = frekuensi kelas median
P = interval kelas median
𝑖
2𝑛 = letak kelas median
6
Langkah-Langkahnya :
Menentukan jumlah frekuensi
Menentukan frekuensi kumulatif
Menentukan kelas median
Menentukan tepi bawah kelas median,
frekuensi kumulatif sebelum kelas median,
frekeuensi kelas median dan interval
7
MODUS
Modus adalah nilai yang sering
muncul atau frekuensi yang paling
besar
8
Modus data kelompok
Rumus
Mo = Tb +
𝑑1
𝑑1+𝑑2. 𝑃
Keterangan :
Mo = modus
Tb tepi bawah kelas modus
d1 = selisih frekuensi kelas modus dengan frekuensi kelas sebeum kelas
modus
d2 = selisish frekuensi kleas modus dengan frekuensi kelaas sesudahnya
9
Multiple Choice
Modus dari data: 7, 6, 8, 3, 5, 4, 7, 8, 4, 6, 7, 3, 5 adalah ...
4
5
6
7
8
10
By Dian Indrayani
SMKN 18 Jakarta
Ukuran Pemusatan Data
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