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<p><strong>GEOG 4/595 -- Geographic Data Analysis</strong><br>
<strong>Winter 2021 -- Quiz 1, Due Monday, January 25</strong></p>
<p>Answer the following questions in a clear, complete, and grammatically-correct sentence or two. Be brief, but informative. <em>Make sure to answer all parts of each question.</em> (Really. This is a major source of lost points.) Unless otherwise indicated, each question is worth one point.</p>
<p>Do not exceed two single-spaced pages (in a 10 or 12-point font, with normal margins) for <em>all</em> (not each) of your answers. Because it is likely that the opportunity to discuss the questions with others will arise, you may do so, but work out and write down the answers yourself.</p>
<p>Don't just Google for answers. (Use the course web page and readings.) Googling for answers violates the first law of quiz- or exam-taking: <em>Don't annoy the reader.</em></p>
<ol>
<li>Briefly descibe what the location, scale, and distribution of a variable are.<br></li>
<li>Which univariate plots and descriptive statistics can be used to describe the scale of a variable?<br></li>
<li>What information about the relationship between two variables is provided by the scatter plot or scatter diagram?<br></li>
<li>What are the trade-offs between using univariate or bivariate plots as opposed to descriptive statistics for describing data. (2 pts.)</li>
<li>What is the trade-off between using R's base graphics and ggplot2 plots?<br></li>
<li>What is the advantage of using a "bubble" or "balloon" plot for constructing a choropleth map (e.g. of Oregon county population)?<br></li>
<li>Recalling that the goals of bi- or multivariate plots are to provide information on the form, strength and dependence (on some additional variables) of the relationships among variables, describe how those goals are implemented using Trellis- or Lattice-style plots (or Faceted ggplot2 plots.) (2 pts)</li>
</ol>
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