Critically examine the well-known methods of probability and non-probability sampling.
What Are The Disadvantages Of Non-probability Sampling?
Advantages and disadvantages of non probability sampling
It is not in strict accordance with the principle of random sampling, it lost the foundation of the existence of large numbers law, will not be able to determine the sampling error, can not properly illustrate the value of the extent to which the statistical sample for Zongti. Although the results based on sample surveys can also explain to some extent the overall nature of the features, but can not be inferred from the overall number.