48 lines
3.1 KiB
XML
48 lines
3.1 KiB
XML
<svg width="700" height="300" xmlns="http://www.w3.org/2000/svg">
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<text x="350" y="22" fill="#333" font-size="14" font-weight="bold" text-anchor="middle">Normal Distribution: Empirical Rule (68-95-99.7)</text>
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<!-- Axes -->
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<line x1="50" y1="240" x2="650" y2="240" stroke="#333" stroke-width="1.5"/>
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<!-- Bell curve -->
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<path d="M 60,238 C 80,237 110,234 140,225 C 170,210 200,180 230,140 C 260,95 290,60 320,45 C 335,40 345,38 350,37 C 355,38 365,40 380,45 C 410,60 440,95 470,140 C 500,180 530,210 560,225 C 590,234 620,237 640,238" fill="none" stroke="#333" stroke-width="2"/>
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<!-- 99.7% region (3σ) -->
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<path d="M 110,234 C 130,230 150,222 170,210 C 200,185 230,140 270,95 C 300,60 330,43 350,37 C 370,43 400,60 430,95 C 470,140 500,185 530,210 C 550,222 570,230 590,234 Z" fill="#27ae60" opacity="0.12"/>
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<!-- 95% region (2σ) -->
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<path d="M 170,210 C 200,185 230,140 270,95 C 300,60 330,43 350,37 C 370,43 400,60 430,95 C 470,140 500,185 530,210 Z" fill="#3498db" opacity="0.15"/>
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<!-- 68% region (1σ) -->
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<path d="M 260,140 C 280,108 310,65 340,43 C 345,39 350,37 350,37 C 350,37 355,39 360,43 C 390,65 420,108 440,140 Z" fill="#e74c3c" opacity="0.2"/>
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<!-- σ markers -->
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<line x1="350" y1="240" x2="350" y2="35" stroke="#333" stroke-width="1" stroke-dasharray="3,3"/>
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<text x="350" y="258" fill="#333" font-size="11" text-anchor="middle">μ</text>
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<!-- ±1σ -->
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<line x1="260" y1="240" x2="260" y2="140" stroke="#e74c3c" stroke-width="1" stroke-dasharray="3,3"/>
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<line x1="440" y1="240" x2="440" y2="140" stroke="#e74c3c" stroke-width="1" stroke-dasharray="3,3"/>
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<text x="260" y="258" fill="#e74c3c" font-size="10" text-anchor="middle">μ-σ</text>
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<text x="440" y="258" fill="#e74c3c" font-size="10" text-anchor="middle">μ+σ</text>
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<!-- ±2σ -->
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<line x1="170" y1="240" x2="170" y2="210" stroke="#3498db" stroke-width="1" stroke-dasharray="3,3"/>
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<line x1="530" y1="240" x2="530" y2="210" stroke="#3498db" stroke-width="1" stroke-dasharray="3,3"/>
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<text x="170" y="258" fill="#3498db" font-size="10" text-anchor="middle">μ-2σ</text>
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<text x="530" y="258" fill="#3498db" font-size="10" text-anchor="middle">μ+2σ</text>
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<!-- ±3σ -->
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<line x1="110" y1="240" x2="110" y2="234" stroke="#27ae60" stroke-width="1" stroke-dasharray="3,3"/>
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<line x1="590" y1="240" x2="590" y2="234" stroke="#27ae60" stroke-width="1" stroke-dasharray="3,3"/>
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<text x="110" y="258" fill="#27ae60" font-size="10" text-anchor="middle">μ-3σ</text>
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<text x="590" y="258" fill="#27ae60" font-size="10" text-anchor="middle">μ+3σ</text>
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<!-- Percentage labels -->
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<text x="350" y="130" fill="#e74c3c" font-size="13" text-anchor="middle" font-weight="bold">68%</text>
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<text x="350" y="195" fill="#3498db" font-size="12" text-anchor="middle" font-weight="bold">95%</text>
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<text x="350" y="225" fill="#27ae60" font-size="12" text-anchor="middle" font-weight="bold">99.7%</text>
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<!-- Bottom note -->
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<text x="350" y="285" fill="#666" font-size="11" text-anchor="middle">Nearly all data (99.7%) falls within 3 standard deviations of the mean.</text>
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</svg> |
