Step-by-step explanation:
1.Census and sampling are two methods of collecting survey data about the population that are used by many countries. ... Census implies complete enumeration of the study objects, whereas Sampling connotes enumeration of the subgroup of elements chosen for participation.
2.Personal interview survey is the method that an interview is conducted with one respondent. An interview is conducted to understand the reasons "why a respondent determines the evaluation of a product or service" while confirming the sense of values and the lifestyle of the respondent.
AdvantagesDisadvantages(a) Personal Interviews 1. Highest response rate. 2. Allows use of all types of questions.1. Most expensive. 2. Possibility of influencing respondents. 3. More time taking