The method of interviewing legal entities lies in interviewing various officials.

During the representative extraction the selection of respondents is being done in a random manner from the companies’ data bases using the “equal interval” method.

During the purpose sampling the companies are being selected under the pre-determined criteria (the field of activity, turnover, the number of employees and others according to the main goals and objectives). It is very often when the universe is being studied fully (for example, recruitment agencies). The given method makes possible the demonstration of product samples, promotional material, test applications,  and so on, and is indispensable when making expert assessments, discovering the process of making purchases by the legal entities and the sources of information.