Political Science 138
Quantitative Reasoning   

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Homework Assignment 5a: OLD ASSIGNMENT DO NOT USE

In-class exercise: Time Series Charts

Standards for time series charts:

  • minimize the ink-to-data ratio

  • Clearly distinguish between lines representing different series.

  • beware of scaling distortions.

  • always display time on the X-axis, left to right.

Task: Create a Time series chart that looks like this:


 

Download the Excel file with the data here

Characteristics of chart:

  • a single data series defines the oil prices

  • this is a line chart

  • An extra data series is used to label the data point on the line

  • the Y-axis is on the right

  • to format the title as shown, a text box --not a chart title --is used.
    (use Insert | Textbox)

Things you have to do:

Set up label  "Bush approves..":

  • Select chart, then:
     Chartools | Design | Select data (select the label series) | Hidden cells | connect points with line

  • Format "label" data series

Format X-axis:

  • format dates on X-axis

  • set Y-axis to cross at maximum point on X-axis

Format Y-axis:

  • set scale for Y-axis