| A | B |
| Case | An individual about whom or which we have data. |
| Categorical variable | A variable that names categories with words or numbers. |
| Context | Tells the Who, What, How, Where, When, Why a study was performed. |
| Data | Systematically recorded information, whether numbers or labels together with its context. |
| Data table | An arrangement of data where rows represent a case and each column represents a variable. |
| Population | All of the cases we wish we knew about. |
| Quantitative variable | A variable in which the numbers act as numerical values; they always have units. |
| Sample | The cases actually examined in seeking to understand the much larger population. |
| Units | A quantity or amount adopted as a standard of measurement, such as meters, seconds, grams. |
| Variable | Holds information about the same characteristics for many cases. |