Primary Data
An advantage of using primary data is that researchers are collecting information for the specific purposes of their study. In essence, the questions the researchers ask are tailored to elicit the data that will help them with their study. Researchers collect the data themselves, using surveys, interviews and direct observations (such as observing safety practices on a shop floor). answers to specific information
Secondary Data
There are several types of secondary data. They can include information from the Census, a company's health and safety records such as their injury rates, or other government statistical information such as the number of workers in different sectors across a country.
Both primary data and secondary data have their pros and cons. Primary data offers tailored information but tends to be expensive to conduct and takes a long time to process. Secondary data is usually inexpensive to obtain and can be analyzed in less time. However, because it was gathered for other purposes, you may need to tease out the information to find what you're looking for.
The type of data researchers choose can depend on many things including the research question, their budget, their skills and available resources. Based on these and other factors, they may choose to use primary data, secondary data - or both.
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Secondary data is faster, cheaper, and less time consuming while primary data will be time consuming and the cost to conduct it is higher.
Primary data is very advantageous over secondary data in several types of ways. First of all, it is the actual thing, or the whole thing, depending on what primary data you are talking about. Primary data in the form of architecture is obviously much preferable over secondary data such as pictures, because it is there in front of you, and can be examined by your senses, not only seen by your eyes. Obviously secondary data also has advantages, such as being easier to obtain than primary data, but primary data is still a good way to obtain information.
Secondary data means information that has already been processed and collected by somebody else. Disadvantages are, for example: -The information can be biased -The information may not perfectly suit you research objective (information may be qualitative) These two main points are decisive and non-debatable enough.
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Secondary sources are better because your not learning the truth you have some story behind it and possible reasons that came to be.