A device used in problem solving, which concisely defines the problem, whose problem it is, the limitations on possible solutions, and the form that the resolution can take
It can provide information about the population, the economy, the market conditions that a business operates in or plans to operate in and major trends in that market
It can help identify the key areas of market information that primary research needs to focus on
It provides evidence that can be used as a baseline against which primary research data can be compared
Large samples are often used, which increases accuracy and reliability
Many of the sources of secondary data can be accessed via the internet
If time or finance is very limited, secondary research might be the only option
There is so much of this data, which opens up new business possibilities if it is analysed carefully
Data is unlikely to have been collected for the specific needs of the business
Not all secondary data is available to all potential users
Secondary data might indicate the potential for a new market, but primary research will be needed to gather specific information for potential consumer profiles and their product preferences
Big data is so vast that it is not easy to analyse and to make useful for an individual business
The selection of a small number of elements from a larger defined target group of elements, to allow information gathered from the small groups to be used to draw conclusions about the larger group
Sampling approach where the probability of any particular sample being selected cannot be calculated, so results cannot be used to make inferences or judgements about the total population
Compared to probability results, non-probability sampling methods are likely to lead to less accurate results which are less representative of the whole population
The first respondent refers to a friend who then refers another friend... and so on. This is a cheap method of sampling & is often used by insurance companies