Final answer:
Secondary data is cost-effective and freely available but may be older or not directly address specific problems. It allows for comparison and analysis but may have limited scope and reliability. It offers historical context and supports hypothesis testing but may have bias and limited control over data collection.
Step-by-step explanation:
One of the advantages of secondary data is that it is nonreactive research, meaning that it does not involve direct contact with subjects and will not alter or influence people's behaviors. This type of research is cost-effective and freely available, making it accessible for analysis. However, there are some disadvantages to using secondary data, such as the possibility that it may be older information or may not directly address the specific problems or challenges that interest you. Additionally, secondary data may lack accuracy and relevance, have limited scope and reliability, or be biased with limited control over data collection.