140184012-Mid-Median-Mod-Sisihan-Lazim.pptx
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Transcript of 140184012-Mid-Median-Mod-Sisihan-Lazim.pptx
![Page 1: 140184012-Mid-Median-Mod-Sisihan-Lazim.pptx](https://reader035.fdocuments.net/reader035/viewer/2022071704/563dbb50550346aa9aac165d/html5/thumbnails/1.jpg)
MIN, MOD, MEDIAN DAN SISIHAN LAZIMMOHAMAD LUQMAN BIN JAILANIT3 PENGAJIAN SOSIAL
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1.MOD
Nilai yang kerap muncul dalam satu taburan
contoh
1 , 22 , 3, 5, 6 , 10, 14, 14 , 14, 5,
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Cara mencari- MOD
Susun urutan dari kecil hingga besar
Kenal pasti nombor yang kerap berulang jawapan- mod bagi urutan nombor tersebut ialah 14
1, 3, 5, 5, 6, 10, 14, 14, 14, 22
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2. MEDIAN
Skor di tengah dalam satu susunan taburan nombor
Contoh
1 , 22 , 3, 5, 6 , 10, 14, 14 , 14, 5,
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Cara mencari - MEDIAN
Susun urutan nombor dari kecil ke besar
Terdapat dua nombor pada titik tengah (6 dan 10)Median. (6+10)/2 = 8 1, 3, 5, 5, 6, 10, 14, 14, 14, 22
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3. MIN
Purata nombor dalam satu susunan nomborformula
Contoh
1 , 22 , 3, 5, 6 , 10, 14, 14 , 14, 5,
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Cara mencari MIN
Tambahkan kesemua nombor, jumlahkan dan bahagikan kepada 10
Min = 1 + 3 +5 + 5 + 6 + 10 + 14, +14 + 14 + 22 1094 10= min = 9.4
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4. Sisihan lazim
Gambaran tentang serakan taburan pencapaian calon dalam sesuatu ujian
Terdapat dua kaedah kiraan sisihan piawai1. Sisihan data tidak terkumpul2. Sisihan data terkumpul
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4.1PENGIRAAAN SISIHAN PIAWAI BAGI DATA TIDAK TERKUMPULSkor matematik 3, 6, 8, 9, 9_ ∑ X X =
N = 3 + 6 + 8 + 9 + 9
5 = 35/5
= 7
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sambungan
X(f) (X - X ) ( X - X )2
3 - 4 16
6 - 1 1
8 1 1
9 2 4
9 2 4
N = 5 ∑ ( X - X )2 = 26
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Rumus sisihan piawai
formula σ = √ ∑ (X - X)2
N
= √26 5
= √5.2 = 2.28
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4.2PENGIRAAN SISIHAN BAGI DATA TERKUMPUL
• formula
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sambungan
=6.4