<h2>Drawing Pie Charts in Biology</h2>
<ul class="bullet">
<li class="item">You want to give a visual representation of percentages as a relative proportion of the total of a circle.</li>
<li class="item">They are a type of graph even though they do not have any axes.</li>
<li class="item">A pie chart is a circle divided into sectors (think of them as the slices of a cake).</li>
<li class="item">100% represents the whole complete circle, 50% represents a half circle, 25% is a quarter circle, and so on.</li>
</ul>
<h3 class="para"><b class="emphasis">Example:</b></h3>
<ul class="arabic">
<li class="item">Count the number of each <a data-lesson="summarizing-community-ecology" data-subject="biology" data-tutorial="population-community-ecology" href="https://app.ulearngo.com/biology/population-community-ecology/summarizing-community-ecology">species</a> and record it in a table.</li>
<li class="item">Work out the total number of species in the ecosystem.</li>
<li class="item">Calculate the percentage of each species.</li>
<li class="item">Use the following formula to work out the angle of each slice:</li>
</ul>
<h4>\(a = \cfrac{v × 360^{\circ}}{t}\)</h4>
<table>
<tbody>
<tr>
<td>
<h3>Species</h3>
</td>
<td>
<h3>No. of Types</h3>
</td>
<td>
<h3>%</h3>
</td>
<td>
<h3>Slice Angle</h3>
</td>
</tr>
<tr>
<td>Insects</td>
<td>17</td>
<td>\(\cfrac{17 × 100}{50} = 34\%\)</td>
<td>\(\cfrac{34 × 360}{100} = 122.4^\circ\)</td>
</tr>
<tr>
<td>Plants</td>
<td>16</td>
<td>\(\cfrac{16 × 100}{50} = 32\%\)</td>
<td>\(\cfrac{32 × 360}{100} = 115.2^\circ\)</td>
</tr>
<tr>
<td>Birds</td>
<td>9</td>
<td>\(\cfrac{9 × 100}{50} = 18\%\)</td>
<td>\(\cfrac{18 × 360}{100} = 65.0^\circ\)</td>
</tr>
<tr>
<td>Amphibians</td>
<td>8</td>
<td>\(\cfrac{8 × 100}{50} = 16\%\)</td>
<td>\(\cfrac{16 × 360}{100} = 57.6^\circ\)</td>
</tr>
</tbody>
</table>
<ul class="arabic">
<li class="item">Use a compass to draw the circle and a protractor to measure accurate angles for each slice.</li>
<li class="item">Start with the largest angle/percentage starting at 12 o' clock and measure in a clockwise direction.</li>
<li class="item">Shade each slice and write the percentage on the slice and provide a key.</li>
</ul>
<p><a href="https://data.ulearngo.com/assets/dd539329-f9f8-4609-a377-022da8d04d82"><img alt="pie-chart" class="size-full wp-image-98528" height="287" src="https://data.ulearngo.com/assets/dd539329-f9f8-4609-a377-022da8d04d82" width="382"/></a></p>

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Pie Charts in Biology

Biology studies life and living organisms. Biology can be divided into different sections that cover the morphology, physiology, anatomy, behavior, and so on of living organisms.

Biology

Learn the fundamentals of biology, including the characteristics of living things, scientific method, important principles and tools such as drawing graphs, tables, and biological drawings, and safety procedures in a lab environment.


Pie Charts in Biology

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