Briefly explain three different types of external data discussed in the chapter. Provide an example of each of the following: Business Source Directories, Articles, Dictionaries and Encyclopedias,...

Briefly explain three different types of external data discussed in the chapter. Provide an example of each of the following: Business Source Directories, Articles, Dictionaries and Encyclopedias, Marketing Directories, and Statistics and Reports. What are the five advantages of secondary data?