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Unformatted text preview: ng Categorical Data
Displaying Categorical Data
Describing Numerical Data
Misleading Graphs Interpreting Graphs
Review Chapter 2 What is Data Visualization?
“Data Visualization: is the presenation of data in a pictorial or
graphica format.” SAS incorporation
Why is it important?
Good data visualization captures the essence of data  without
oversimplifying.
The process of data analysis is one that to a great extend
involves using our eyes. There is an intimate connection
between seeing clearly and thinking clearly
We use our eyes in collaboration with our brains to make sense
of information
DaiTrang Le Chapter 2 (continued) Data Visualization  Picturing Varia What is Data Visualization?
Displaying Categorical Data
Displaying Categorical Data
Describing Numerical Data
Misleading Graphs Interpreting Graphs
Review Chapter 2 What is Data Visualization?
“Data Visualization: is the presenation of data in a pictorial or
graphica format.” SAS incorporation
Why is it important?
Good data visualization captures the essence of data  without
oversimplifying.
The process of data analysis is one that to a great extend
involves using our eyes. There is an intimate connection
between seeing clearly and thinking clearly
We use our eyes in collaboration with our brains to make sense
of information
DaiTrang Le Chapter 2 (continued) Data Visualization  Picturing Varia What is Data Visualization?
Displaying Categorical Data
Displaying Categorical Data
Describing Numerical Data
Misleading Graphs Interpreting Graphs
Review Chapter 2 What best describes your Learning Style? Most of us are visual learners.
What do you see wrong with the summary above?
DaiTrang Le Chapter 2 (continued) Data Visualization  Picturing Varia What is Data Visualization?
Displaying Categorical Data
Displaying Categorical Data
Describing Numerical Data
Misleading Graphs Interpreting Graphs
Review Chapter 2 What best describes your Learning Style? Most of us are visual learners.
What do you see wrong with the summary above?
DaiTrang Le Chapter 2 (continued) Data Visualization  Picturing Varia What is Data Visualization?
Displaying Categorical Data
Displaying Categorical Data
Describing Numerical Data
Misleading Graphs Interpreting Graphs
Review Chapter 2 What best describes your Learning Style? Most of us are visual learners.
What do you see wrong with the summary above?
DaiTrang Le Chapter 2 (continued) Data Visualization  Picturing Varia What is Data Visualization?
Displaying Categorical Data
Displaying Categorical Data
Describing Numerical Data
Misleading Graphs Interpreting Graphs
Review Chapter 2 Directed versus Exploratory Approaches
“Do you see what I see?” Directed Analysis begins with a speciﬁc question that you wish to answer,
then proceed a search for the data that may result in ﬁnding the answer. Exploratory Analysis begins by looking at the data w.o predetermining
what you expect to ﬁnd, then proceed to noticing things in the data that
are interesting and asking a question about it, then proceed in the
directed path in search of the Le
answer.
Da...
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 Spring '14

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