click below
click below
Normal Size Small Size show me how
Stat Chapter 1/2
Introduction to Statistics and Data
| Word | Definition |
|---|---|
| Statistics | A way of reasoning using calculations made from data that help understand the world. |
| Context | Tells WHO was measured, WHAT was measured, WHERE the data was collected, WHEN and WHY the study was performed, and HOW the data were collected. |
| Data | Systematically recorded information with its context. |
| Data Table | An arrangement of data where rows represent a case, and columns represent a variable. |
| Case | What the data is about. |
| Population | What is to be represented by the sample. The whole. |
| Sample | The few cases we can examine to understand the population. |
| Variable | Holds information about the same characteristic for many cases. |
| Units | Quantity of amount adopted as a standard of measurement. |
| Categorical (Qualitative) Data | Names categories. Answers questions about the categories. (Ex. religion, favorite music, favorite food, etc.) |
| Quantitative Data | Measured numerical values. Always have units. (Ex. distance, weight, time, age, etc.) |
| Two Types of Quantitative Data | Discreet and Continuous. |
| Discreet Data | Counted quantitative data. Measurable. (Ex. minutes, distance, etc.) |
| Continuous Data | Quantitative data that can take on any value in an interval. Measurable. (Ex. shoe size, etc.) |