Plastic Pasteur pipettes, also referred to as transfer pipettes, have their stems and bulbs in the form of a single piece made of plastic. There are different sizes. The volumes are usually marked on the stem, though the markings are rather crude and are not particularly accurate.
Research Methods in Sociology â An Introduction. An introduction to research methods in Sociology covering quantitative, qualitative, primary and secondary data and defining the basic types of research method including social surveys, experiments, interviews, participant observation, ethnography and longitudinal studies. Why do social research?
It is a very controlled, exact approach to research. Quantitative research methods were originally developed in the natural sciences to study natural phenomena (Myers,1997). This type of research is used in many different fields, such as insurance, medicine, government, education, psychology, and law.oth methods also have ways of sampling. Random sampling is preferred in quantitative research. This allows the researcher to pick a representation of a larger group and the results can be generalized to the larger group. In qualitative research, sampling is not random.