The document presents an agenda for a presentation on the use of line and bar charts, highlighting their purposes in media. Line charts are primarily used to show trends over time while bar charts emphasize categorical comparisons. It discusses the differences between exploratory and explanatory analyses and how these visualizations can effectively convey data insights.

1. Line and Bar Chart Review

2. Presentation Agenda
Why Line Charts
Why Bar Charts
Line Charts in the Media
Bar Charts in the Media
Explanatory vs. Exploratory

3. Purpose: Trend over time
Scenario: Annual Sales by
Month or website page views by
day of the week
Storyline: Look for changes
over time, or intersections in the
line charts. This indicates that
preferences changed or
something drastic happened
Line Chart

4. Line Charts in the Media

5. Line Charts in the Media

6. Purpose: Categorical
Comparison
Scenario: Comparing sales by
product line or sales by employee
Storyline: When using bar
charts, “contrast” is typically the
main point to highlight
Bar Chart

7. Bar Charts in the Media

8. Bar Charts in the Media

9. Exploratory analysis is what you do to understand the
data and figure out what might be noteworthy or
interesting
Explanatory analysis is what happens when you have
something specific you want to show an audience

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Sales by Day of the Week
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Exploratory vs Explanatory Visualizations
viewer sees the trend, but is unaware
of any possible causes / effects
in addition to the graph, there are
texts, color, and enclosures to
explain a point