UKURAN PENYEBARAN.pptx - 1 2 3 4 5 Range Hamparan Simpangan...

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Materi 1. Range 2. Hamparan 3. Simpangan kuartil 4. Simpangan rata-rata 5. Ragam dan simpangan baku
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Range / Jangkauan Jangkauan (jarak) serangkaian data adalah selisih nilai (data) terbesar dengan nilai (data) yang terkecil dalam rangkaian data tersebut. a. Jangkauan data tunggal Keterangan : J = range / jarak/ jangkauan x maks = nilai data terbesar x min = nilai data terkecil 2 J = x maks – x min
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Range / Jangkauan Contoh Besarnya keuntungan yang diperoleh oleh seorang pedagang selama lima bulan terakhir (dalam jutaan rupiah) sebagai berikut: 5, 5.1, 6, 6.3, 7 hitunglah jangkauannya? Penyelesaian J = x maks – x min = 7,0 – 5,0 = 2,0 Jadi jangkauan data tersebut adalah 2 3
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Range / Jangkauan b. Jangkauan Data Kelompok Bila datanya sudah disusun dalam tabel frekuensi, jangkauannya dapat dihitung dengan rumus: Atau 4 J = nilai tengah tertinggi – nilai tengah terendah J = batas atas kelas terakhir – batas bawah kelas pertama
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Range / Jangkauan Contoh Data dibawah ini menunjukan hasil omset 70 pedagang kaki lima di Kota Ternate 5 Omzet (jutaan Rp) Banyaknya pedagang (jiwa) Nilai tengah (xi) 20 – 29 1 24,5 30 – 39 4 34,5 40 – 49 7 44,5 50 – 59 13 54,5 60 – 69 25 64,5 70 – 79 15 74,5 80 – 89 5 84,5 Total 70
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Range / Jangkauan Penyelesaian Batas bawah kelas pertama adalah 20. Batas bawah kelas terakhir adalah 80. Maka jangkauannya J = 80 – 20 = 60 , atau Nilai tengah kelas pertama adalah 24,5 nilai tengah kelas terakhir adalah 84,5. Maka jangkaunanya J = 84,5 – 24,5 = 60 Jadi jangkauannya adalah 60 juta rupiah 6 LANJUTAN
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Hamparan
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