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		<title>Belajar Statistik &#8211; Mean, Median, Mode dan Populasi</title>
		<link>https://onestringlab.com/mean-median-mode-dan-populasi/</link>
		
		<dc:creator><![CDATA[Rajo Intan]]></dc:creator>
		<pubDate>Mon, 25 Oct 2021 13:35:56 +0000</pubDate>
				<category><![CDATA[Kode]]></category>
		<category><![CDATA[Mean]]></category>
		<category><![CDATA[Median]]></category>
		<category><![CDATA[Modus]]></category>
		<category><![CDATA[Populasi]]></category>
		<category><![CDATA[Python]]></category>
		<category><![CDATA[Sampel]]></category>
		<category><![CDATA[Statistik]]></category>
		<guid isPermaLink="false">https://onestringlab.com/?p=244</guid>

					<description><![CDATA[<p>Pada artikel ini akan dibahas mengenai mean, media, modus dan populasi pada data statistik. Jupyter Notebook Kesimpulan Mean adalah rata-rata, median adalah nilai tengah dan &#8230; </p>
<p>The post <a href="https://onestringlab.com/mean-median-mode-dan-populasi/">Belajar Statistik &#8211; Mean, Median, Mode dan Populasi</a> appeared first on <a href="https://onestringlab.com">Onestring Lab</a>.</p>
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<p>Pada artikel ini akan dibahas mengenai mean, media, modus dan populasi pada data statistik. </p>



<h2 class="wp-block-heading">Jupyter Notebook</h2>




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<p><a href="https://colab.research.google.com/github/Onestringlab/osl_statistik/blob/main/1_Mean%2C_Median%2C_Mode_dan_Populasi.ipynb" target="_parent"><img decoding="async" src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a></p>

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<p><strong>import library numpy</strong></p>

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<div class=" highlight hl-python"><pre><span></span><span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="k">as</span> <span class="nn">plt</span>
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<p><strong>Membuat data</strong></p>

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<div class=" highlight hl-python"><pre><span></span><span class="c1"># angka dari 7 - 10 sebanyak 20 buah</span>
<span class="n">data</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">7</span><span class="p">,</span><span class="mi">10</span><span class="p">,</span><span class="mi">20</span><span class="p">)</span>
<span class="n">data</span>
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<pre>array([8, 8, 9, 8, 9, 7, 8, 7, 7, 9, 9, 7, 9, 7, 8, 7, 8, 9, 7, 8])</pre>
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<p><strong>Mean</strong> adalah nilai rata-rata dari sebuah data.
$$\bar{X} = \frac{\sum_{}{}X_i} n$$</p>
<p>dimana X = data observasi; n = jumlah observasi</p>

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<div class=" highlight hl-python"><pre><span></span><span class="c1"># mean atau rata-rata</span>
<span class="n">np</span><span class="o">.</span><span class="n">mean</span><span class="p">(</span><span class="n">data</span><span class="p">)</span>
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<pre>7.95</pre>
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<p><strong>Median</strong> adalah nilai tengah dari data ketika data tersebut telah diurutkan.</p>

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<div class=" highlight hl-python"><pre><span></span><span class="n">data</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">sort</span><span class="p">(</span><span class="n">data</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="n">data</span><span class="p">)</span>
<span class="n">np</span><span class="o">.</span><span class="n">median</span><span class="p">(</span><span class="n">data</span><span class="p">)</span>
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<pre>[7 7 7 7 7 7 7 8 8 8 8 8 8 8 9 9 9 9 9 9]
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<pre>8.0</pre>
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<p><strong>Mode</strong> adalah nilai yang paling sering muncul dalam suatu data.</p>

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<div class=" highlight hl-python"><pre><span></span><span class="c1"># Nilai mode dicari dengan fungsi mode</span>
<span class="kn">import</span> <span class="nn">statistics</span>
<span class="n">mode</span> <span class="o">=</span> <span class="n">statistics</span><span class="o">.</span><span class="n">mode</span><span class="p">(</span><span class="n">data</span><span class="p">)</span>
<span class="n">mode</span>
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<pre>7</pre>
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<p><strong>Populasi dan Sampel</strong><br>
Populasi merupakan keseluruhan dari data yang ada.<br>
Sampel merupakan sebagian dari populasi.</p>

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<div class=" highlight hl-python"><pre><span></span><span class="c1"># populasi data angka dari 1 sampai 9 sebanyak 100 buah</span>
<span class="n">populasi</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span><span class="mi">10</span><span class="p">,</span><span class="mi">100</span><span class="p">)</span>
<span class="n">populasi</span>
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<pre>array([3, 1, 8, 6, 6, 1, 5, 7, 7, 7, 6, 8, 2, 7, 8, 1, 4, 9, 5, 7, 8, 3,
       7, 6, 4, 7, 1, 3, 2, 1, 9, 5, 2, 2, 6, 8, 6, 4, 2, 4, 5, 1, 5, 6,
       2, 3, 7, 6, 8, 5, 6, 2, 2, 2, 9, 7, 4, 2, 9, 1, 5, 9, 2, 7, 9, 9,
       7, 6, 9, 2, 2, 3, 7, 9, 3, 8, 7, 3, 1, 1, 5, 3, 2, 7, 4, 1, 3, 3,
       6, 3, 6, 7, 9, 5, 1, 3, 5, 9, 4, 6])</pre>
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<div class=" highlight hl-python"><pre><span></span><span class="nb">print</span><span class="p">(</span><span class="s2">"Mean :"</span><span class="p">,</span><span class="n">np</span><span class="o">.</span><span class="n">mean</span><span class="p">(</span><span class="n">populasi</span><span class="p">))</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">"Median :"</span><span class="p">,</span><span class="n">np</span><span class="o">.</span><span class="n">median</span><span class="p">(</span><span class="n">populasi</span><span class="p">))</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">"Mode :"</span><span class="p">,</span><span class="n">statistics</span><span class="o">.</span><span class="n">mode</span><span class="p">(</span><span class="n">populasi</span><span class="p">))</span>
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<pre>Mean : 4.91
Median : 5.0
Mode : 7
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<p><strong>Mengambil sampel dari populasi</strong></p>

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<div class=" highlight hl-python"><pre><span></span><span class="n">sampel</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">choice</span><span class="p">(</span><span class="n">populasi</span><span class="p">,</span> <span class="mi">20</span><span class="p">)</span>
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<pre>array([8, 1, 2, 2, 2, 9, 1, 1, 1, 7, 7, 2, 5, 9, 9, 1, 8, 3, 7, 9])</pre>
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<div class=" highlight hl-python"><pre><span></span><span class="nb">print</span><span class="p">(</span><span class="s2">"Mean :"</span><span class="p">,</span><span class="n">np</span><span class="o">.</span><span class="n">mean</span><span class="p">(</span><span class="n">sampel</span><span class="p">))</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">"Median :"</span><span class="p">,</span><span class="n">np</span><span class="o">.</span><span class="n">median</span><span class="p">(</span><span class="n">sampel</span><span class="p">))</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">"Mode :"</span><span class="p">,</span><span class="n">statistics</span><span class="o">.</span><span class="n">mode</span><span class="p">(</span><span class="n">sampel</span><span class="p">))</span>
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<pre>Mean : 4.7
Median : 4.0
Mode : 1
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<p><strong>Mengambil sampel beberapa kali dari populasi</strong></p>

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<div class=" highlight hl-python"><pre><span></span><span class="n">sampel_1</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">choice</span><span class="p">(</span><span class="n">populasi</span><span class="p">,</span> <span class="mi">15</span><span class="p">)</span>
<span class="n">sampel_2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">choice</span><span class="p">(</span><span class="n">populasi</span><span class="p">,</span> <span class="mi">15</span><span class="p">)</span>
<span class="n">sampel_3</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">choice</span><span class="p">(</span><span class="n">populasi</span><span class="p">,</span> <span class="mi">15</span><span class="p">)</span>
<span class="n">sampel_4</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">choice</span><span class="p">(</span><span class="n">populasi</span><span class="p">,</span> <span class="mi">15</span><span class="p">)</span>
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<div class=" highlight hl-python"><pre><span></span><span class="c1"># memuat sampel-sampel ke dalam list</span>
<span class="n">data_sampel</span> <span class="o">=</span> <span class="p">[</span><span class="n">sampel_1</span><span class="p">,</span> <span class="n">sampel_2</span><span class="p">,</span> <span class="n">sampel_3</span><span class="p">,</span> <span class="n">sampel_4</span><span class="p">]</span>
<span class="n">mean_sampel</span> <span class="o">=</span> <span class="p">[]</span>

<span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">data_sampel</span><span class="p">:</span>
  <span class="n">mean_sampel</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">np</span><span class="o">.</span><span class="n">mean</span><span class="p">(</span><span class="n">x</span><span class="p">))</span>

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<pre>[5.2, 4.4, 3.6666666666666665, 4.733333333333333]</pre>
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<div class=" highlight hl-python"><pre><span></span><span class="nb">print</span><span class="p">(</span><span class="s2">"Mean dari sample"</span><span class="p">,</span> <span class="n">np</span><span class="o">.</span><span class="n">mean</span><span class="p">(</span><span class="n">mean_sampel</span><span class="p">))</span>
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<pre>Mean dari sample 4.5
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<div class=" highlight hl-python"><pre><span></span><span class="nb">print</span><span class="p">(</span><span class="s2">"Mean dari populasi"</span><span class="p">,</span> <span class="n">np</span><span class="o">.</span><span class="n">mean</span><span class="p">(</span><span class="n">populasi</span><span class="p">))</span>
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<pre>Mean dari populasi 4.91
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<p><strong>Terlihat mean populasi tidak jauh berbeda dari mean sampel</strong></p>

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<h2 class="wp-block-heading">Kesimpulan</h2>



<p>Mean adalah rata-rata, median adalah nilai tengah dan modus adalah nilai yang paling sering muncul dalam suatu data.  Untuk artikel lain terkait dengan statistik silahkan lihat kumpulan artikelnya <a href="https://onestringlab.com/tag/statistik/" target="_blank" rel="noreferrer noopener nofollow">disini</a>.    </p>
<p>The post <a href="https://onestringlab.com/mean-median-mode-dan-populasi/">Belajar Statistik &#8211; Mean, Median, Mode dan Populasi</a> appeared first on <a href="https://onestringlab.com">Onestring Lab</a>.</p>
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