Quantitive research is usually numerical facts that can be
obtained by closed questions. Qualitative research is usually opinions,
interviews and quotes. The advantage of qualitative research is that it is
great for getting people’s opinions and first hand experiences of important
events making it information that you wouldn’t find elsewhere and therefore
highly valuable. A disadvantage of this type of research is that people on one can
be heavily biased or influenced. For example a person supporting one football
team will argue against any red cards or fouls given against their team but
wouldn’t do so for the opposition. Another disadvantage could be that the
people involved in scandals or leaks can be heavily influenced, paid to keep
quiet or keep up a false image to what’s actually happening, therefore making
them unreliable. Quantitive research doesn’t have these issues with bias as the
information tends to be accurate and easily proved. This method of research
also has its disadvantages, numbers and figures don’t really represent the
feelings and emotions of the people involved, particularly victims. The figures
need to be constantly checked and verified to see if they have increased or
decreased. This is very relevant to newspapers where their articles are written
well in advance of when they go on sale.
Primary research is information that you research and
generate yourself, for example, observations made when viewing an exhibit show
performance for visiting a location. Interviews with people, reports of
meetings and discussions, the collection of information from questionnaires or
surveys, focus group activities. Secondary research is where you take
information from somewhere else who has generated it. This includes things such
as referring to books, journals, magazines and newspapers, gathering
information from the public interest, making notes on information presented on
audio-visual format, like DVDs, videos or CDs. Collect information from CD
logs.
Not only does primary research enable the marketer to focus on specific issues, it also enables the marketer to have a higher level of control over how the information is collected. In this way the marketer can decide on such issues as size of project (e.g., how many responses), location of research (e.g., geographic area) and time frame for completing the project.
Unlike secondary research where the marketer may spend for information that is not needed, primary data collections’ focus on issues specific to the researcher improves the chances that research funds will be spent efficiently.
Information collected by the marketer using primary research is their own and is generally not shared with others. Thus, information can be kept hidden from competitors and potentially offer an “information advantage” to the company that undertook the primary research.
Compared to secondary research, primary data may be very expensive since there is a great deal of marketer involvement and the expense in preparing and carrying out research can be high.
To be done correctly primary data collection requires the development and execution of a research plan. Going from the start-point of deciding to undertake a research project to the end-point to having results is often much longer than the time it takes to acquire secondary data.
Some research projects, while potentially offering information that could prove quite valuable, are not within the reach of a marketer. Many are just too large to be carried out by all but the largest companies and some are not feasible at all. For instance, it would not be practical for McDonalds to attempt to interview every customer who visits their stores on a certain day since doing so would require hiring a huge number of researchers, an unrealistic expense. Fortunately, as we will see in a later tutorial there are ways for McDonalds to use other methods (e.g., sampling) to meet their needs without the need to talk with all customers.
In years past accessing good secondary data required marketers to visit libraries or wait until a report was shipped by mail. When online access initially became an option marketers needed training to learn different rules and procedures for each data source. However, the Internet has changed how secondary research is accessed by offering convenience (e.g., online access from many locations) and generally standardized usage methods for all data sources.
Researchers are often attracted to secondary data because getting this information is much less expensive than if the researchers had to carry out the research themselves.
Secondary research is often used prior to larger scale primary research to help clarify what is to be learned (Step 2). For instance, a researcher doing competitor analysis, but who is not familiar with competitors in a market, could access secondary sources to locate a list of potential competitors.
As we will discuss, research conducted using primary methods are largely controlled by the marketer. However, this is not the case when it comes to data collected by others. Consequently, the quality of secondary research should be scrutinized closely since the origins of the information may be questionable. Organizations relying on secondary data as an important component in their decision-making (e.g., market research studies) must take extra steps to evaluate the validity and reliability of the information by critically evaluating how the information was gathered, analyzed and presented.
Secondary data is often not presented in a form that exactly meets the marketer’s needs. For example, a marketer obtains an expensive research report that looks at how different age groups feel about certain products within the marketer’s industry. Unfortunately, the marketer may be disappointed to discover that the way the research divides age groups (e.g., under 13, 14-18, 19-25, etc.) does not match how the marketer’s company designates its age groups (e.g., under 16, 17-21, 22-30, etc). Because of this difference the results may not be useful.
Since the research received may not be specific to the marketer’s needs, an argument can be made that research spending is inefficient. That is, the marketer may not receive a satisfactory amount of information for what is spent.
(http://www.knowthis.com/data-collection-low-cost-secondary-research/secondary-research-disadvantages)

