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Sampling Techniques
Presented byShenam Ashfaq Shah Abdul Azeem
SAMPLE
Sample is the number of people that are selected form the entire population for the
purpose of research by the researcher.
A sample is the true representative of the entire population and the values driven out
form that sample are held to true for the entire population.
Choosing The Right SampleIt is deemed essentially important that the
right sample is selected for the purpose of research.
Not everybody in the population can be selected for research. Only a certain number
of people could be selected that actually depict the true picture for the entire
population.
Essentials for Choosing a Sample
For choosing the right sample, the researcher must first determine:
Sample Size:The number of people to be researched
Sample Demographics:It includes the basic demographics of sample likeAgeGenderIncomeOccupationResidenceEducationReligionBelieves
Sampling Techniques
A- Probability Sampling
1- Simple Random Sampling2- Stratified Random Sampling3- Systematic Random Sampling4- Cluster Random Sampling
B- Non probability Sampling:1- Convenience Sampling
A- Probability Sampling
Probability sampling is the random sampling in which every individual of the sample has an equal opportunity
to be selected for the research.
1- Simple Random SamplingSimple random sampling involves
choosing a sample according to the requirement of the thesis and out of that sample, choosing the people on random. Just anyone in the sample
could be selected.
2- Stratified Random SamplingIn stratified sampling, the population to be researched is divided into layers or groups. From within these different groups, people are selected randomly.
But all of the groups have to be included in the research.
3- Systematic Random Sampling
In this technique, the sample population or the groups are chosen at
random. Once they are selected, the individuals in the sample are chosen at a regular fixed interval. Like every fifth
or tenth person in the sample is selected.
4- Cluster Random Sampling
For researching a large portion of the population, the population is divided into separate groups or clusters and
each cluster could be treated separately for the purpose of research.
B- Non probability Sampling
Non random sampling involves selecting the sample population on non random basis. It means that not
everyone in the population has a equal chance of being selected.
1- Convenience SamplingConvenience sampling is the non
probability sampling technique in which the sample population is
selected at the ease and convenience of the researcher.
sumary Sample Choosing the right sample Essentials for Choosing a Sample Sampling techniques Probability Sampling Simple Random Sampling Stratified Random Sampling Systematic Random Sampling Cluster Random Sampling Non probability Sampling Convenience Sampling
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