Analysis of pretest data

In the marketing research, the researcher has to conduct a pretest. Analysis of pretest responses can serve as a check on the adequacy of the problem definition and the data and analysis required to obtain the necessary information. For example, the dummy tables prepared before developing the questionnaire will point to the need for the various sets of data. If the response to a question cannot be related to one of the preplanned dummy tables, either those data are superfluous, or some relevant analysis has not been foreseen. Therefore, analysis of pretest data helps the researcher to ensure that all data collected will be utilized and that the questionnaire will obtain all the necessary data.