Statistics is a subject that deals with the collection, analysis, and representation of collected data. The analytical data derived from methods of statistics are used in the fields of geology, psychology, forecasting, etc.
- Qualitative Data: Describes qualities, characteristics, or categories. It is usually non-numerical. Examples: Eye color (blue, brown, green), Gender, Favorite food.
- Quantitative Data: Consists of numbers and can be measured or counted. Examples: Height (170 cm), Weight (65 kg), Age (20 years).
The key differences between Qualitative and Quantitative Data are:
| Qualitative Data | Quantitative Data |
|---|---|
| It uses methods like interviews, participant observation, and focus on a grouping to gain collective information. | It uses methods as questionnaires, surveys, and structured observations to gain collective information. |
| The data format used in it is textual. Datasheets contain audio or video recordings and notes. | The data format used in it is numerical. Datasheets are obtained in the form of numerical values. |
| It talks about the experience or quality and explains the questions like 'why' and 'how'. | It talks about the quantity and explains the questions like 'how much', 'how many. |
| The data is analyzed by grouping it into different categories. | The data is analyzed by statistical methods. |
| It is subjective and can be further open to interpretation. | It is fixed and universal. |