MIS 0855 Lecture 6: Data Science Notes 4.1
23 May 2018
School
Department
Course
Professor
Viewing Data
• Visualization
o Visualization and reporting tools are becoming very important
o Analysts and managers need to deliver what the analyses tell
o Reporting tools, scorecards, dashboards
• Basic elements of a data visualization
o Content, context, construction
• What types of charts can you use for categorical values?
o Bar charts, pie charts
• What types of charts can you use for continuous values?
o Line graphs, histograms
• Definitions
o Variable – numerical if meaningful arithmetic can be performed on it; ordinal if
there is a natural ordering of its possible values; nominal if there is no natural
ordering
o Categorical variables can be coded numerically or left uncoded
o Binning (or discretizing) – categorizing a numerical variable by putting the data
into discrete categories
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