Exercises

Mix and Match

The following items describe a column in a data table. On the basis of the description, assign a one- or two-word name to the variable, indicate its type (categorical, ordinal, or numerical), and describe the cases. If the data are a time series, identify the frequency of the data. The first item is done as an example.

Variable Name Type Cases
Nom Ord Num
Model of cellular telephone used by customers Model Customers
Weights of people, measured in pounds Weight People
 1. Brand of car owned by drivers
 2. Income of households, measured in dollars
 3. Color preference of consumers in a focus group
 4. Counts of customers who shop at outlets of a chain of retail stores

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