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Module 2 Lesson 2
Terms in this set (11)
What is one way to tell if data is quantitative?
Ask: Does it make sense to do math on these numbers?
A single set of values, a vector, is a list not a table
Why should you use a table to display data?
To show the relationship between a quantitative and categorical subdivision data in a simple way
What is one strength of using a table to visualize your data?
You can easily compare values and use different units of measurement on the same table.
What are the entire set of reasons to use a table to display your data?
The document will be used to look up individual values.
It will be used to compare individual values.
Precise values are required.
The quantitative information involves more than one unit of measure.
What are the characteristics of a graph?
Values are displayed within an area delineated by one or more axes.
Values are encoded as visual objects positioned in relation to the axes.
Axes provide scales (quantitative and categorical) that are used to assign values and labels to the visual objects.
What are graphs used for?
to display relationships among multiple quantitative values by giving them shape.
The visual nature of graphs endows them with their unique power to reveal patterns of various types, including changes, differences, similarities, and exceptions.
Graphs can't communicate quantitative relationships that are much more complex than simple associations between individual quantitative values and categorical subdivisions that are expressed in tables
When should you use graphs?
The message is contained in the shape of the values.
The document will be used to reveal relationships among multiple values
What should be included in an analytic report?
Methodology and Data
Limitations of this analysis
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