Characteristics of a Good Sample Representativeness Absence of sampling error Economically viable Generalized and applicable Goal oriented Proportional Randomly Selected Actual information provider Practical

1. Characteristics
of a
Good Sample

3. Sahin Sahari
Asst. Professor (Belda College)
Ex-Asst. Professor of ABS Academy (Post Graduate Dept. of Education.)
Ex-Guest Teacher of WBNSOU(Muragacha Govt. College)
Ex-Guest Teacher of Jonepur High School
B.A (Education). M.A(Education). B.Ed. NET(Education). SET(Education)
Ph. D in Education(Contd..)

4. Characteristics of a Good Sample
• Representativeness
• Absence of sampling error
• Economically viable
• Generalized and applicable
• Goal oriented
• Proportional
• Randomly Selected
• Actual information provider
• Practical

5. Characteristics of a Good Sample
1. Representativeness
• A researcher selects a relatively small number for a
sample from an entire population.
• This sample needs to closely match all the
characteristics of the entire population.
• It will help generalize the results from a small group
to large population being studied.

6. Characteristics of a Good Sample
2. Absence of sampling error
• Sampling error is the error caused by taking a
small sample instead of the whole population for
study.
• Sampling error is reduced by selecting a large
sample and by using efficient sample design and
estimation strategies.

7. Characteristics of a Good Sample
3. Economically viable
• Studies have a limited budget called the research
budget.
• The sample should be done in such a way that it
is within the research budget and not too
expensive to be replicated

8. Characteristics of a Good Sample
4. Generalized and applicable
• Samples that it covers the whole population of
the study and is not limited to a part.

9. Characteristics of a Good Sample
5. Goal oriented
• A sample should be goal oriented.
• It is means and should be oriented to the
research objectives and fitted to the research
conditions.

10. Characteristics of a Good Sample
6. Proportional
• A sample should be proportional.
• It should be large enough to represent the population properly.
• The sample size should be sufficiently large to provide
statistical stability or reliability.
• The sample size should give accuracy required for the purpose
of particular study.

11. Characteristics of a Good Sample
7. Randomly Selected
• A sample should be selected at random.
• This means that any item in the group has a full and
equal chance of being selected and included in the
sample.
• This makes the selected sample truly representative
in character.

12. Characteristics of a Good Sample
8. Actual information provider
• A sample should be as to provide actual
information required for the study or research.

13. Characteristics of a Good Sample
9. Practical
• A sample should be practical.
• The sample should be simple i.e. it should be
capable of being understood and followed in the
fieldwork.

15. Sahin Sahari
Asst. Professor (Belda College)
Ex-Asst. Professor of ABS Academy (Post Graduate Dept. of Education.)
Ex-Guest Teacher of WBNSOU(Muragacha Govt. College)
Ex-Guest Teacher of Jonepur High School
B.A (Education). M.A(Education). B.Ed. NET(Education). SET(Education)
Ph. D in Education(Contd..)