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The difference between the value of exports and the value of imports is called
Convenience Sampling
Sampling based on convenience to the researcher.
Judgmental Sampling
A non-random sampling technique where the researcher selects units to be sampled based on their knowledge and professional judgment.
Network Sampling
A method of sample selection used in research that involves choosing participants through networks or connections within a specific population.
Stratified Random Sampling
Sampling in which randomly selected units from small or minority populations are forced into the sample to ensure that they are represented in proportion to their presence in the population.
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