The purpose of this study is to determine the methodological issues of facts in the master thesis written by using quantitative methods in the fields of management and marketing. For this purpose, a total of 106 master thesis in the field of management and marketing by using quantitative methods written in Gazi University, Department of Business Administration between the period of years 1990-2005 have been examined in terms of a research process. In this prospect, firstly the thesis have been examined in terms of purpose of study, research designs, means of data collecting and analyzing methods and then the problems encountered in the thesis were determined. With regard to research designs while it is observed that field research has been used widely in both fields, but in management the relational field research and in marketing descriptive field research were mostly used. In the thesis examined, it is determined that questionnaire is the mostly preferred data obtaining technique.. When data analyzing methods were considered, it is observed that in management procedural statistics have been used whereas in marketing descriptive statistics have been used. The important problems that were encountered in the thesis are as follows; act of writing the research hypothesis statement, using statistical tests without any hypothesis, no or inadequate explanations about the universe and sample of the research and mistakes when determining the samples.