STATISTIKA (DATA KELOMPOK)
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catatan statistika data kelompok (ukuran pemusatan data) kelas 12. ini telat banget sih 😭 tapi Alhamdulillah lengkap kok!
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No.: Statistika Data kelompok Ukuran Pemusatan Data - M WW Definisi Ukuran pemusatan data adalah. Suatu nilai tunggal yang mewakili Rumus umum " Rata & hitung Jumlah semua nilai data Jenis Banyaknya nilai data 2222. - Mean data tunggal Suatu kumpulan data dan menunjukkan - Mean untuk data diboboti karakteristik dari kumpulan data tsb. yang termasuk ukuran Pemusatan: 1. Rata-rata hitung (mean) Jumlah seluruh nilai data dibagi banyaknya data. 2. Median Data tengah Selalu diurutkan dari yang terkecil hingga yg terbesar. 3. Modus ★ Nilai yang paling sering muncul atau Frekuensi tertinggi Mean * Lambang (baca: Xbar) - Mean data berkelompok - Mean sementara Mean Data Tunggal ** Jika terdapat n buah data yang terdiri dari X1, X2, X3, ... ✗ mean data tersebut dapat didefinisikan Sbg berikut: Rumus Malang ket. Krata hitung xX+X++ Xn n = Xi 1-1 n X₁ Jumlah data n-banyaknya data
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No. Contoh = M Dik. total penjualan PUPUK NPK (kg) Selama satu tahun (2010) di KUD MDP Sebagai berikut: Bulan Pupuk terjual Ckg). Januari 500 Februari 520 Maret 480 April 450 Mei 463 Juni 430 Juli 435 Agustus 475 September 502 Oktober 512 November 532 Desember 521 mm M WW 5 Mean untuk data diboboti Jika nilain buah data adalah ... X₁, X2, X3, Xn, dan masing-masing Frekuensi adalah F1, F2, F3, ... Fn, maka mean data tsb didefinisikan sebagai berikut: MM M WW FX+f2 X2 + F3.X3++ FnXn = Efi.xi. ΣFi ΣFi Tent. rata-rata PUPUK NPK yg terjual! Jawab: Ket= = Thank you EF.x Jumlah hasil perkalian setiap •Nilai rata-rata dapat dihitung sbg berikut: Fi = data dan Frekuensinya Frekuensi data ke-i x = 500 + 520+480+450 + 463 + 430 + 435 +475 X; = data kei +502 +512+532 +521 EFi-n=Jumiah data 12 × = 5820 = X = 485 12 Jadi, rata-rata PUPUK NPK yg terjual adalah 485 kg/bulan. 180 mm x 257 mm Sent A Night Sileok KIKY
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No.: Contoh = Berikut ini tabel penjualan 10 buah Kios Pakaian Pada minggu Pertama bulan Januari 2010 Mata SKS Nilai Kuliah Huruf Angka Pancasila 2 A- 3,75 Pendidikan agama 2 A 4,00 islam Pakaian Xi Kios Fi Kalkulus 4 D 1,00 70 2 6 Peng. Teknologi Informasi 3 c+ 2,25 80 3 Alogaritma & 3 A 4,00 90 4 Pemrograman 100 Logika 3 B 3,00 Tent rata-rata penjualan tsb! matematika Jawab: Statistika & 3 A/B 3,50 Pakaian (xi) Kios (fi) Xi. Fi Probablitas 70 2 140 Bahasa inggris 2 B- 2,75 80 3 240 Praktikum 1 B/C 2,50 go 360 alogaritma 1 100 1 100 Jumiah 10 840 Jawab = Efi = 840 ☑ = 84 Contoh= 10 Jadi, penjualan 10 buah Tent. IPK mahasiswa tsb ! Nilai indeks Prestasi komulatif CIPK) Kos Pakaian pada minggu, merupakan nilai rata-rata terbobot. Pertama bulan Januari Nilai IPK dapat dihitung sbg berikut: 2010 adalah 84 buah. x = (2) (3,75) + (2) (4) + (4) (1) + (3) (2,25) + (3)(4)(3)(3)(3)(3,5) + (2) (2,75) + TO DO LISTI (1)(2,5) 2+2+4+3+3+3+3+2+1 Dik. daftar nilai seorang mahasiswa pada x = 65,75 Setiap mata kuliah beserta Sks dalam Semester Pertama sbg berikut: 23 X = 2,86 Jadi, IPK mahasiswa tsb adalah 180 mm x 257 mm LOVELY MODE 2.86 KIKY
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Contoh Misal A memperoleh nilai 65 untuk tugas, 76 untuk mid dan to untuk Ujian akhir. Bila nilai tugas diberi bobot 2, Mid 3. dan ujian akhir 4, maka rata-rata hitungnya adalah: Jawab No.: Jawab: X1 = nila, tengah interval ✗ Fi ☑ Fi Xi 1-5 6 3 18 6-10 20 8 160 11-15 10 13 130 16-20 g 18 162 21-25 5 23 115 Jumlah 50 585 x = Efi.xi EFi = 638 X = 585 g 50 = 70,89 X = 11,7 x=(2) 65+ (3) 76 + (4) 70. = 2+3+4 130 +228 + 280 g Jadi, Penghasilan rata-rata pedagang adalah 11,7 x Rp 10.000 = RP 117.000 Mean Data Berkelompok and FUNNY Rumus X-EFI.Xi ket: ЄFi Xi titik tengah kelas ke-i Contoh = Tabel Pendapatan so Pedagang kaki lima pada 1 Januari 2010 Pendapatan (dalam Puluhan ribu rupiah) Fi 6 1-5 6-10 20 11-15 10 16-20 g 21-25 5 Mean Sementara Langkah-langkah nya. come 11. Tetapkan rata-rata sementara, Pilih pada kelas yang mempunyai Frekuensi tertinggi dan letaknya ditengah 2. Tentukan simpangan (devias,) terhadap rata-rata Sementara, dengan rumus. di = xi-xs 3. Tentukan rata-rata sesungguhnya, dengan rumus: x=x+EFidi EF
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Contoh: 4104717 Tinggi Frekuensi 150-154 3 155-159 5 160-164 10 165-169 13 No.: Metode Coding Ui-0 Cletaks) = Rumus x = xs + EFi.ui.c 00 170-174 175-179 IN 7 EF 2 C-Panjang interval HAPPY BIRTHDAY Jawab Contoh = Tinggi F Xi di Fidi Panjang F 1150-154 3 152 -15 -45 35-39 I 155-159 5 157 -10 -50 40-44 4 160-164 10 162 -5 -50 45-49 12 1165-169 13 (167) 0 170-174 7 172 5 175-179 2 177 10 OSO 0 50-54 23 go on a trip 35 55-59 7 20 60-64 3 Jumiah. 40 -90 Jawab: Panjang F Xi Ui Fi.Ui 1 Malang Langkah-langkah ! 35-39 37 -3 -3 40-44 4 42 -2 -8 1.ambil Frekuensi paling besar yaitu 13,x=167 45-49 12 47 -1 -12 2. kurangkan semua x, dengan 167 50-54 23 (52) 0 ○ 3. kalikan F dengan Fidi 55-59 7 57 1 7 60-64 3 62 2 6 Jumiah 50 -10 XS =167 x=xs + Efi.di EF = 167+ -90 40 = = 167+-2,25 164,75 Langkah-langkah. ambil Frekuens, paling besar yaitu 23, X52 (x5) 2. angka o dimulai dari letak, xs, keatas negatif, kebawah positif 3. kalikan F dengan ui KIKY
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x = xs + EFi·li.c EF 52+-10.5 50 Let's Party = 52-1 = 51 Median No.: Contoh Dik. Besarnya tekanan darah dari 50 mahasiswa suatu universitas yg disajikan dalam bentuk tabel Sbg berikut. Tentukan besarnya median dari data tsb ! kelas F FK 93-97 2 2 98-102 10 12 103-107 12 24 108-112 10 34 med 7 41 118-122 4 45 123-127 3 48 128-132 49 133-137 49 138-142 1 50 Letak median n = = 2.50 = 25 Median adalah nilai pusat yang terletak 113-117 di tengah-tengah kumpulan data, Jika kelompok data tsb diurutkan mulai yang terkecil (x) sampai yg terbesar (xn) Notas Penulisan Median dapat ditulis dan "med" Median "1 Data Berkelompok Rumus = Tb + 1/2 n - FK C ket = F kelas median = 108-112 kelas median C = 5 (98-93) = tb tepi bawah kelas median C = n F = = Panjang kelas interval banyaknya data pengamatan Frekuens, kelas median FK = Jumlah Frekuens sebelum kelas median. 180 mm x 257 mm n = 50 Fk24 (2+10+12) = = tb 108-0,5 = 107,5 F = 10 med = Tb + 2n-FK.C F = 107,5+25-24.5 with you, = 10 = 107,5+0,5 108 KIKY
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No.: Modus DIET Contoh: Dik besarnya tekanan darah dari 50 mahasiswa suatu universitas yang Modus adalah nilai atau kelas yg disajikan dalam bentuk tabel menunjukkan data yang paling Sering sebagai berikut. muncul dari kelompok data. Tent. besarnya modus! 20 Modus menunjukkan nilai atau kelas dan Frekuensi yg paling tinggi Kelas F Notas penulisan 93-97 2 "1 Modus dapat ditulis dgn "Mod" 98-102 10 103-107 (12) mod Rumus = Tb + d₁.c Ket= di+dz 108-112 10 113-117 7 118-122 4 123-127 3 T= tepi bawah 128-132 C = pjg. kelas interval S 133-137 0 HAPPY • n = banyaknya data 138-142 1 = di Selisih antara Frekuens, kelas modus Jawab = 50 Letak modus = 12 Silent Night dgn Frekuensi kelas sebelum kelas modus kelas modus • dz Selisih antara Frekuensi kelas modus C = 5 (98-93) dengan Frekuensi kelas setelah kelasn modus = 50 Idi 2 (12-10) → atas = kelas modus kelas dgn Frekuensi dz 2 (12-10) bawah. tertinggi HAPPY 180 mm x 257 mm @ tb=103-0,5 = 102,5 Mod Tb + dic = di+d2 102,5+2 5 = 102,5 +2,5 2+2 = 105 KIKY
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No.: Modus DIET Contoh: Dik besarnya tekanan darah dari 50 mahasiswa suatu universitas yang Modus adalah nilai atau kelas yg disajikan dalam bentuk tabel menunjukkan data yang paling Sering sebagai berikut. muncul dari kelompok data. Tent. besarnya modus! 20 Modus menunjukkan nilai atau kelas dan Frekuensi yg paling tinggi Kelas F Notas penulisan 93-97 2 "1 Modus dapat ditulis dgn "Mod" 98-102 10 103-107 (12) mod Rumus = Tb + d₁.c Ket= di+dz 108-112 10 113-117 7 118-122 4 123-127 3 T= tepi bawah 128-132 C = pjg. kelas interval S 133-137 0 HAPPY • n = banyaknya data 138-142 1 = di Selisih antara Frekuens, kelas modus Jawab = 50 Letak modus = 12 Silent Night dgn Frekuensi kelas sebelum kelas modus kelas modus • dz Selisih antara Frekuensi kelas modus C = 5 (98-93) dengan Frekuensi kelas setelah kelasn modus = 50 Idi 2 (12-10) → atas = kelas modus kelas dgn Frekuensi dz 2 (12-10) bawah. tertinggi HAPPY 180 mm x 257 mm @ tb=103-0,5 = 102,5 Mod Tb + dic = di+d2 102,5+2 5 = 102,5 +2,5 2+2 = 105 KIKY
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Tolong SPILL materi belajar matematika kelas 10 dong, matematika wajib dan minatt 🙂↕️🙂↔️
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cara cari modus, median, mean ini gimana yaa? dikasih tau rumusnya gitu. tapi belum ngerti. tolong yaa
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