Research can be based on primary dataor secondary data. Primary research is conducted when new data is gathered for a particular product or hypothesis. This is where information does not exist already or is not accessible, and therefore needs to be specifically collected from consumers or businesses. Surveys, focus groups, research panels and research communities can all be used when conducting primary market research.
Secondary research uses existing, published data as a source of information. It can be more cost effective than conducting primary research. The Internet opens up a wealth of resources for conducting this research. The data would, however, originally have been collected for solving problems other than the one at hand, so they may not be sufficiently specific. Secondary research can be useful in identifying problems to be investigated through primary research.
The Internet is a useful tool when conducting both primary and secondary research. Not only are there a number of free tools available when it comes to calculating things such as sample size and confidence levels (see the section on Tools of the trade for some examples), but it is also an ideal medium to reach large numbers of people at a relatively low cost.