Aresearcher wants to study the effects of social class on consumption behavior. he establishes three different categories of social class in terms of amount of income. he then assigns each field worker a specified number of interviews with people in each income category although the interviewers are allowed to select who they interview. this is an example of

Social stratification

Explanation:

Social stratification is a sociological concept used to analyze and interpret the classification of individuals and social groups, based on data and common socioeconomic conditions.

The main objective of social stratification within Sociology studies is to understand the functioning of the hierarchical organization of a society. In addition, it also aims to identify the main distinctions between social classes and how inequalities are socially constructed.

1. seasonal

2. frictional unenployment

3. the number of the labor force multiplied by 100 and then subtract the number of unemployed.

4. 4%

5. an increase in prices