In order to save time, money, and effort a group of criminologists, sociologists, psychologists, and political scientists combine their survey questions into one large questionnaire to be distributed to a group of students. this survey is known as a/an:

Institutions provided omnibus survey which consists combined questions forming one large questionnaire to student groups. It is a way of conducting marketing research to collect various data from the subjects of the study, wherein it is also called as the "piggyback survey." 

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.