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Sampling technique (Quota sampling (Disadvantage (It is not completely…
Sampling technique
Quota sampling
Advantage
Easy to get the sample
Disadvantage
It is not completely random
Need to understand the population to be able to identify the basis of stratification
Defination
The population is divided by the most important variables and then use promotion to get the sample
Systematic sampling
Advantage
Ensures sample is spread across the population
Easier to extract the sample than via simple random
Disadvantage
It requires lots of time and efforts
Definition
Take all the units of the population as sample
Judgement sampling
Advantage
Good for providing illustrative examples or case studies
Disadvantage
Sample is always small
Not representative to the population
Easy to be biased
Definition
It is determined by people deliberately
Simply random sampling
Advantage
Can calculate both estimate of the population and sampling error
Easy to design and intepret
Disadvantage
Need a complete and accurate population list
It is to complex to reach every units if the population is so big
Definition
It is completely randomised sample without any bias
Convenience sample
Advantage
Easiest to reach
Lots of information will be collected quickly
Disadvantage
The results are biased. It is not exact for the entire population
Volunteers will make this result less accurate
Definition
People who are volunteering to get into the experiment or are easiest to get
Cluster sample
Advantage
Does not have strict requirement
Good for face-to-face surveys
Quick and easy
Disadvantage
Greater risk of sampling error
Expensive if the clusters are large
Definition
Units are devided into different group due to its geographical different.