There are numerous differences between qualitative and quantitative measurement.
Quantitative Research
Quantitative Research options have been predetermined and a large number of respondents are
involved. By definition, measurement must be objective, quantitative and statistically valid.
Simply put, it’s about numbers, objective hard data. The sample size for a survey is calculated by
statisticians using formulas to determine how large a sample size will be needed from a given
population in order to achieve findings with an acceptable degree of accuracy. Generally,
researchers seek sample sizes which yield findings with at least a 95% confidence interval
(which means that if you repeat the survey 100 times, 95 times out of a hundred, you would get
the same response), plus/minus a margin error of 5 percentage points. Many surveys are designed
to produce a smaller margin of error.
Qualitative Research
Qualitative Research is collecting, analyzing, and interpreting data by observing what people do
and say. Whereas, quantitative research refers to counts and measures of things, qualitative
research refers to the meanings, concepts, definitions, characteristics, metaphors, symbols, and
descriptions of things.
Qualitative research is much more subjective than quantitative research and uses very different
methods of collecting information, mainly individual, in-depth interviews and focus groups. The
nature of this type of research is exploratory and open-ended. Small numbers of people are
interviewed in-depth and/or a relatively small number of focus groups are conducted.
Participants are asked to respond to general questions and the interviewer or group moderator
probes and explores their responses to identify and define people’s perceptions, opinions and
feelings about the topic or idea being discussed and to determine the degree of agreement that
exists in the group. The quality of the finding from qualitative research is directly dependent
upon the skills, experience and sensitive of the interviewer or group moderator.
This type of research is often less costly than surveys and is extremely effective in acquiring
information about people’s communications needs and their responses to and views about
specific communications.
Basically, quantitative research is objective; qualitative is subjective. Quantitative research
seeks explanatory laws; qualitative research aims at in-depth description. Qualitative research
measures what it assumes to be a static reality in hopes of developing universal laws. Qualitative
research is an exploration of what is assumed to be a dynamic reality. It does not claim that what
is discovered in the process is universal, and thus, replicable. Common differences usually cited
between these types of research include.
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