

Statistika
Presentation
•
Mathematics
•
12th Grade
•
Hard
Mahdianto Mahdad
Used 3+ times
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5 Slides • 0 Questions
1
Statistika
Ukuran Pemusatan Data

2
- Mean
Mean (Nilai rata-rata) merupakan nilai yang dianggap paling mendekati nilai yang paling tepat dari hasil pengkuran. Nilai ini berfungsi sebagai “wakil” dari nilai-nilai hasil pengukuran sekelompok data.
3
Mean Data Tunggal
x=nx1+x2+x3+...+xnatau x=n∑i=1nxi
Keterangan :
x=rata−rata
i=1∑nxi=jumlah seluruh data
n=banyaknya data
4
Contoh 1
Hitunglah rataan dari 6,5,9,7,8,8,7,6 !
Jawab:
x=85+6+6+7+7+8+8+9
5
Contoh 2
Jumlah buku yang diproduksi oleh sebuah mesin cetak selama tujuh hari adalah sebagai berikut 25.000, 20.000, 24.000, 15.000, 30.000, 35.000, dan 40.000. berapa ribu rata-rata produksi perhari?
Jawab:
x=715.000+20.000+24.000+25.000+30.000+35.000+40.000 x=7189.00=27.000
Statistika
Ukuran Pemusatan Data

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