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 | ||||
Get Statistics for Business: Decision Making and Analysis, 3rd Edition now with O’Reilly online learning.
O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.