What are the advantages and disadvantages of secondary data? Solution Secondary data is the data which is already available. Advantages 1. Secondary data is cheaper as well as more easily available. 2. It requires less efforts. 3. It is time saving. 4. Secondary data improves the understanding of the problem. 5. Provides basis for comparision for data that has been collected by the researchers. Disadvantages of Secondary data 1. Secondary Data may be oudated. 2. Accuracy of secondary data cannot be ascertained. 3. It may not fit in the framework of the marketing research factors..