Primary data is collected firsthand through research, questionnaires, experiments and surveys.
Secondary data:
Secondary data is data that is readily available through other means such as online databases, new's, journals or other public information sources.
Qualitative data:
Qualitative data is data that can not be measured such as colors or the temperature for example that bird is green cannot be measured.
Quantitative data:
Quantitative data on the other hand is data that can be measured as is recorded as purely numerical data such as number of people in the room.
