
Statistika
Presentation
•
Mathematics
•
8th Grade
•
Hard
Emmy Maghfiroh
FREE Resource
6 Slides • 0 Questions
1
Statistika
Oleh : EMMY FAUQONUR MAGHFIROH, S.Pd, Gr
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Pengertian STATISTIKA
Statistika adalah ilmu pengetahuan yang berhubungan dengan cara-cara pengumpulan data, pengolahan data, penyajian data, penganalisaan data serta penyimpulan data. Data adalah suatu informasi yang diperoleh dari pengamatan atau penelitian.
3
Macam-macam data:
1. Data kuantitatif yaitu data berupa angka.
contoh: data-data nilai ujian
2. Data kualitatif yaitu data yang berupa kata-kata (bukan angka).
contoh: data tentang hobi seseorang
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Penyajian Data
1. Tabel
2. Dalam bentuk diagram
- Diagram batang
- Diagram lingkaran
- Diagram gambar (Piktogram)
- Diagram Garis
5
Ukuran Pemusatan Data
1. Rata-rata (Mean)
2. Modus (Mo)
Modus adalah data yang paling sering muncul atau data yang mempunyai frekuensi terbesar.
3. Median (Me) dan Quartil
a. Median adalah nilai tengah data setelah diurutkan
b. Quartil
Quartil adalah aturan yang membagi data menjadi 4 bagian
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Ukuran Penyebaran data
Jenis penyebaran data dibagi menjadi 3 :
1. Jangkauan (range)
2. Jangkauan Kuartil (Hamparan)
3. Jangkauan Semi Kuartil/ Simpangan kuartil
Statistika
Oleh : EMMY FAUQONUR MAGHFIROH, S.Pd, Gr
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