Secondary data is data that has already been collected and stored by someone else, such as newspaper articles or official statistics
Primary data is collected first-hand by the researcher, such as interviews
Secondary research is done before primary to determine what research has already been done and to identify gaps or issues that need further investigation. It saves time and money.
Primary research means that the researcher can examine exactly the area they wish to and have far more control. It reflects contemporary ideas.
Secondary data is practical, it allows us to make comparisons, and it allows us to identify gaps in research
Secondary data may not meet the needs of the researcher