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(This article was first published on <strong><a href="http://www.r-exercises.com/2017/04/12/data-structures-exercises-part-2/?utm_source=rss&utm_medium=rss&utm_campaign=data-structures-exercises-part-2"> R-exercises</a></strong>, and kindly contributed to <a rel="nofollow" href="https://www.r-bloggers.com/">R-bloggers)</a> </div>
<p>In the Exercises we will cover Hashes, Factors and Zoo in R</p>
<p><a target="_blank" rel="nofollow" href="https://i2.wp.com/www.r-exercises.com/wp-content/uploads/2017/04/Data_image.png"><img sizes="(max-width: 281px) 100vw, 281px" alt="" class="wp-image-4876" src="https://i2.wp.com/www.r-exercises.com/wp-content/uploads/2017/04/Data_image-281x300.png?resize=281%2C300" data-recalc-dims="1"></a></p>
<p>Answers to the exercises are available <a target="_blank" rel="nofollow" href="http://www.r-exercises.com/2017/04/12/data-structures-solutions-part-2/">here</a>.</p>
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<div><strong>Learn more</strong> about Data Structures in the online course <a target="_blank" rel="nofollow" href="http://www.r-exercises.com/product/r-data-pre-processing-data-management-shape-your-data/"><br>
R Data Pre-Processing &amp; Data Management – Shape your Data!</a>. In this course you will learn how to:
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<li>Convert your data in R</li>
<li>Use SQL query embedded in R</li>
<li>Work with different data management packages like dplyr</li>
<li>And much more</li>
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<p><strong>Exercise 1</strong></p>
<p>Create a Hash based Key Value Pairs with three employees, with Employees as the key and the name as the values.</p>
<p><strong>Exercise 2</strong></p>
<p>Create Hash of an Employee with the Name, Age, Address &amp; SSN as the key and the details of the employee as the values</p>
<p><strong>Exercise 3</strong></p>
<p>Create Hash and use names function to give names to the key.</p>
<p><strong>Exercise 4</strong></p>
<p>Create a factor based on marks of students and print the summary of the same.</p>
<p><strong>Exercise 5</strong></p>
<p>Create a factor based on heights and print the levels and summary for the heights factor</p>
<p><strong>Exercise 6</strong></p>
<p>Create a factors of 10 random values between 1 and 100, with on repeating values and also check the variable is a factor</p>
<p><strong>Exercise 7</strong></p>
<p>Create a factor based on Age of students and plot a graph based on the age.</p>
<p><strong>Exercise 8</strong></p>
<p>Create a random factor based on 0 &amp; 1 and give assign false for 0 and true for 1 and check the variable by print the type of the variable.</p>
<p><strong>Exercise 9</strong></p>
<p>Create a random factor based on 0 &amp; 1 and give assign false for 0 and true for 1 and assign new 11 the value as False.</p>
<p><strong>Exercise 10</strong></p>
<p>Create a data Frame of dates and return of company and use zoo<br>
to convert the data.</p>
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<h3>Related exercise sets:</h3>
<ol>
<li><a title="Data frame exercises Vol. 2" target="_blank" rel="nofollow" href="http://www.r-exercises.com/2016/11/28/data-frame-exercises-vol-2/">Data frame exercises Vol. 2 </a></li>
<li><a title="Descriptive Analytics-Part 1: Data Formatting Exercises" target="_blank" rel="nofollow" href="http://www.r-exercises.com/2016/10/26/descriptive-analytics-part-1-data-formatting/">Descriptive Analytics-Part 1: Data Formatting Exercises </a></li>
<li><a title="Data Science for Doctors – Part 1 : Data Display" target="_blank" rel="nofollow" href="http://www.r-exercises.com/2017/01/29/data-science-for-doctors-part-1-data-display/">Data Science for Doctors – Part 1 : Data Display </a></li>
<li><a target="_blank" rel="nofollow" href="http://www.r-exercises.com/start-here-to-learn-r/">Explore all our (>1000) R exercises</a></li>
<li><a target="_blank" rel="nofollow" href="http://www.r-exercises.com/r-courses/">Find an R course using our R Course Finder</a> directory</li>
</ol>
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