Political Science 138
Quantitative Reasoning   

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Lab 6: Create a bar chart.
 

Note: Before doing this lab assignment, you should have read the introduction and page 61 thru 68 and 86 thru 91 of JPDA.
Also check out:
Chart tip #4: Bar Chart Tips

To do: Download these data and create a chart that looks like one of these:

 

 

Standards for bar charts:

  • Data should be sorted on the most significant variable (not alphabetically)
  • Maximize the ratio of data-to-ink (avoid 3-D effects and extraneous elements).
  • Precise labeling and definition of values.
  • Multivariate displays of data are best (see the poverty chart, above)

Features of these charts:

  • they are only about 3.5 inches wide
  • no lines or borders for the chart, plot area, vertical axis
  • legend is horizontal, inside chart