4-10
Chapter 4: Communicating with Visuals
Slide 4-32
Line Charts
Line charts show changes in information over time.
Changes in a series are shown on the vertical (y) axis and time is placed on the horizontal (x) axis.
Several series on the same chart may be shown. Generally, the maximum number is three to five, but use
Slide 4-33
Scatter Diagrams
Scatter diagrams and area charts are variations of line charts. The area chart can only show information
from one series. See Exhibit 4-14 in the textbook for an example of an area chart.
In a scatter diagram, data is plotted on the x- and y-axes, but the points or clusters of points reveal the
information rather than a line drawn through them. The clustering of the points reveals information about
Slide 4-34
Maps
Maps communicate quantitative as well as physical information. Some of the most common formatting
techniques for statistical maps include
• Showing different areas with color, shading, or cross-hatching. If this technique is used, a legend
Remind students that one caution to using maps with different shades of the same color (as this one does)
is that some people may find those differences in shades hard to differentiate. Also, if the report is meant
to be printed, you may want to consider the contrast levels of the colors or using patterns and cross-
hatching in order to make the distinctions stand out if printed in black and white.
Connect Assignment 4-1 (a–e): Choosing a Visual for Allied Distribution