This powerpoint discusses the locale and sample of the study. It also discussess the different sampling techniques needed in Research II

1. PRACTICAL RESEARCH
Chapter 3
Locale and sample of the study

2. SAMPLE
OF THE

3. What is sample of the study?
– This describes the target population and the
sample frame.
-It specifies the sampling technique used and
how the sample size is determined.

4. What is sample?
• Is any subset of elements drawn by
some appropriate method from a defined
population
• A representative part or single item from
a larger whole or group especially when
presented for inspection or shown as
evidence of quality.
• A finite part of a statistical population
whose properties are studied to gain
information about the whole

5. What is sampling?
– The act or process or selecting a suitable representative
part of population for the purpose of determining
parameters or characteristics of the whole population

6. BASIS FOR COMPARISON PROBABILITY SAMPLING NON-PROBABILITY SAMPLING
Meaning Probability sampling is a sampling
technique, in which the subjects of
the population get an equal
opportunity to be selected as a
representative sample.
Nonprobability sampling is a method
of sampling wherein, it is not known
that which individual from the
population will be selected as a
sample.
Alternately known as Random sampling Non-random sampling
Basis of selection Randomly Arbitrarily
Opportunity of selection Fixed and known Not specified and unknown
Research Conclusive Exploratory
Result Unbiased Biased
Method Objective Subjective
Inferences Statistical Analytical
Hypothesis Tested Generated
Comparison Chart

7. Different
sampling
techniques
NON-PROBABILITY SAMPLING

8. 1. CONVENIENCE SAMPLING
– This is a method of selecting samples that are available and
are capable of participating in a research study on a current
issue.
– This method is sometimes called haphazard or availability
sampling

10. 2. SNOWBALL SAMPLING
– Is a technique where the researcher identifies a key informant
about a research of interest and then ask that respondents to
refer or identify another respondent who can participate in the
study.

12. 3. PURPOSIVE SAMPLING
– is sometimes called judgemental or subjective sampling
employs a procedure in which samples are chosen for special
purpose
– It may involve members of a limited group of population.

14. 4.QOUTA SAMPLING
– Is gathering a representative sample from a group based on
certain characteristics of the population chosen by
researcher. Usually the population is divided into specific
groups.

16. Different
sampling
techniques
PROBABILITY SAMPLING

17. 1.Random sampling
• Is a method by which every element of a population has
a chance of being included in a sample
• That is, the elements that compose the sample are
taken without purpose,
• The more elements in the sample, the better the
chances of getting a true picture of the whole
population.

18. 2.Simple random sampling
– Is a procedure where a sample is selected in such
a way that every element is a likely to be selected
as any other element from the population.

19. Student x Student x Student x Student x
1₃ - 88 12₄ - 90 23₃ - 90 34₂ - 85
2₄ - 85 13₄ - 88 24₄ - 87 35₄ - 89
3₁ - 90 14₂ - 88 25₃ - 88 36₃ - 89
4₁ - 85 15₄ - 90 26₂ - 95 37₃ - 89
5₃ - 86 16₃ - 85 27₄ - 88 38₁ - 92
6₂ - 90 17₂ - 85 28₄ - 91 39₄ - 89
7₃ - 88 18₄ - 86 29₁ - 92 40₁ - 85
8₂ - 92 19₄ - 87 30₃ - 87 41₄ - 90
9₄ - 90 20₁ - 85 31₃ - 92 42₄ - 89
10₁ - 92 21₃ - 85 32₄ - 88 43₁ - 88
11 - 86 22₂ - 85 33₂ - 90 44₁ - 93
45₃ - 86
E
X
A
M
P
L
E
Legend: Subscript stands for year level, 13 means student number 1, third year;
424 means student number 42, fourth year.

20. 3. Systematic random sampling
• Is a sampling procedure with a random start.
• Systematic sampling is a type of probability sampling method
in which sample members from a larger population are
selected according to a random starting point and a fixed,
periodic interval. This interval, called the sampling interval, is
calculated by dividing the population size by the
desired sample size.

21. Systematic random sampling

22. 4.Stratified random sampling
• Is a specially used when the population can naturally be
classified into groups or strata.
• Stratified random sampling is a method of sampling that
involves the division of a population into smaller groups
known as strata. In stratified random sampling, or
stratification, the strata are formed based on members'
shared attributes or characteristics.

23. STRATIFIED RANDOM SAMPLING

24. SUMMARY

25. RESEARCH
LOCALE

26. What is a research locale?
– This discusses the place or setting of the study.
– It describes in brief the place where the study is
conducted.
– Only important features which have the bearing on the
present study are included.
– Shows the target population.

27. RESEARCH

29. • The study was conducted at Far Eastern University, this
place was selected for knowing the efficiency of the said
study among nursing students and for them to feel
comfortable, this study has been implemented on the 4th
year Bachelor of Science in nursing students, these study
has tested the effectiveness of music therapy while
reviewing their lessons before taking their exams. This
study helped researchers found out how effective it is for
students,.
RESEARCH
LOCALE

30. Prepared by GROUP 1