CONCEPT OF CENSUS METHOD AND SAMPLE METHOD

Ø  CENSUS SAMPLE METHODS OF COLLECTION OF DATA

Ø  STATISTICS FOR ECONOMICS/MARKETING RESEARCH

  CONCEPT OF CENSUS AND SAMPLE

1.    UNIVERSE OR POPULATION SIMPLY REFERS TO AN AGGREGATE OF ITEMS TO BE STUDIED FOR INVESTIGATION.

2.    POPULATION DOES NOT MEAN TOTAL NUMBER OF PEOPLE LIVING IN COUNTRY. IN STATISTICS, THE TERM POPULATION MEANS THE AGGREGATE OF ALL ITEMS ABOUT WHICH WE WANT TO OBTAIN THE INFORMATION

3.    IF A STATISTICAL INQUIRY IS BASED ON ALL ITEMS OF THE UNIVERSE IT IS CALLED CENSUS INQUIRY

4.    WHEN A STATISTICAL INQUIRY IS BASED ON SAMPLE REPRESENTATIVE OF THE UNIVERSE IT IS CALLED SAMPLE METHOD

  CENSUS METHOD

1.    IS THAT METHOD IN WHICH DATA ARE COLLECTED COVERING EVERY ITEM OF THE UNIVERSE OR POPULATION RELATING TO THE PROBLEM UNDER INVESTIGATION

2.    IMPLIES COMPLETE ENUMERATION OF THE UNIVERSE/POPULATION. CENSUS OF POPULATION

  SUITABILITY

1.    SMALL SIZE OF POPULATION

2.    WIDELY DIVERSE ITEMS IN THE POPULATION

3.    REQUIREMENT OF DIFFERENT ITEMS

4.    HIGH DEGREE AND ACCURACY OF RELIABILITY

  MERITS

1.    RELIABLE AND ACCURATE

2.    LESS BIASED

3.    EXTENSIVE INFORMATION

4.    STUDY OF DIVERSE CHARACTERISTICS

5.    STUDY OF COMPLEX INVESTIGATION

6.    INDIRECT INVESTIGATION

  DEMERITS

1.    COSTLY

2.    LARGE MANPOWER

3.    NOT SUITABLE FOR LARGE INVESTIGATIONS