Once you've defined your target market segment (for example: long-distance runners), you can use secondary research to determine the size of the segment and whether it's growing, shrinking, or stable.
- If your target market is a type of consumer, use the data tables in Mintel reports to define the size of your defined market segments.
- If your target market is a particular type of business (e.g., dairy farms), use an industry report from IBISWorld.