Variable Types and Their Distributions
Let's look at this data table.
Select File → Open, and select the Life Expectancy data table and click Open.
Before doing any analysis, make sure that you can answer these questions:
What population does this data table represent?
Is this set of data a sample?
What is the source of the data?
How many variables are in the table?
What data type is each variable?
What does each variable represent?
How many observations are there?
Take special note of the way this particular data table has been organized. We have 13 annual observations for each country, and they are "stacked" one upon the other. Not surprisingly, JMP refers to this arrangement as stacked data.
In this portion of the chapter, we'll raise some questions ...
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