THE SAMPLING PROCESS

THE SAMPLING PROCESS
5. Executing The Sampling Process
4. Determine The Sample Size
Factors affecting sample size
The research objective
The extent of precision desired
The acceptable risk in predicting that lvl
of precision
The amount of variability in the population itself
The cost & time constraints
The size of population
3. Determine The Sampling Design
Types Sampling Design
Probability
Element in the population have some
known,non-zero chance or probability of
being selected as sample subjects.
Use when Representativeness of the sample is
of importance in the interests of wider
generalizability.
Non-Probability
Element do not have known or predetermined
chance of being selected as subjects
Used when time or other factors, rather than
generalizability become critical.
2. Determine The Sample Frame
Meaning
Is a (physical) representation of all
elements in the population from
which sample is drawn
1. Define The Population
Meaning
The target population must be defined in terms
of elements, geographical boundaries, & time
Example
Expatriate in Klang Valley Hotel
Reading habits of elderly target population
is ppl aged 50 and over
Important
Illustrate that the research objective & the
scope of the study
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