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Lesson4.html
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<a href="Lesson1.html">Lesson 1</a>
</li>
<li>
<a href="Lesson2.html">Lesson 2</a>
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<li>
<a href="Lesson3.html">Lesson 3</a>
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<a href="Lesson4.html">Lesson 4</a>
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<a href="Lesson5.html">Lesson 5</a>
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<a href="Lesson6.html">Lesson 6</a>
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<a href="Lesson7.html">Lesson 7</a>
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<a href="Lesson8.html">Lesson 8</a>
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<p><br />
<!-- install packages --></p>
<!-- ____________________________________________________________________________ -->
<!-- ____________________________________________________________________________ -->
<!-- ____________________________________________________________________________ -->
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<div id="lesson-4-wrangling-data-with-dplyr" class="section level1">
<h1>Lesson 4: Wrangling data with <code>dplyr</code></h1>
<p> </p>
<p>Functions for Lesson 4<br />
<code>is.na</code>, <code>arrange</code>, <code>select</code>, <code>mutate</code><br />
</p>
<p>Packages for Lesson 4<br />
<code>dplyr</code><br />
</p>
</div>
<div id="agenda" class="section level1">
<h1>Agenda</h1>
<p><a href="https://r4ds.had.co.nz/transform.html#missing-values">Data visualisation in <code>R</code> for Data Science, Section 5.2.3</a>.<br />
</p>
<!-- end yaml template------------------------------------------------------- -->
<ul>
<li>Continue where we left off last time with more functions from the <code>dplyr</code> package. You'll use these functions to help wrangle data.</li>
</ul>
</div>
<div id="do-first" class="section level1">
<h1>Do First</h1>
<ol style="list-style-type: decimal">
<li>Use the <code>nycflights13</code> data set and identify the flights that arrived more than 30 minutes late.</li>
</ol>
<p> </p>
<ol start="2" style="list-style-type: decimal">
<li>Identify flights that departed between midnight and 5am (inclusive).</li>
</ol>
<p> </p>
</div>
<div id="todays-approach" class="section level1">
<h1>Today's approach</h1>
<p> </p>
<p><a href="https://www.davidkane.info/files/gov_1005_spring_2019.html">See David Kane's philosophy on teaching data science here</a></p>
<p> </p>
<center>
<img src="img/ulysses.jpeg" />
</center>
<p> </p>
</div>
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<h1>Tidying</h1>
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<h1>5.2.3 Missing values</h1>
<center>
<img src="img/missing.png" />
</center>
</div>
<div id="exercises" class="section level1">
<h1>Exercises</h1>
<ul>
<li>5.3.1 - <code>arrange</code></li>
<li>5.4.1 - <code>select</code></li>
<li>5.5.2 - <code>mutate</code></li>
</ul>
</div>
</div>
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