2. Primary
Primary research consists of a collection of original
primary data. It is often undertaken after the
researcher has gained some insight into the issue by
reviewing secondary research or by analyzing
previously collected primary data. clarification
needed It can be accomplished through various
methods, including questionnaires and telephone
interviews in market research, or experiments and
direct observations in the physical science, amongst
others
3. secondary
Secondary research (also known as desk
research) involves the summary, collation
and/or synthesis of existing research rather
than primary research, where data is
collected from, for example, research
subjects or experiments.
