Sampling can be more accurate than a census as there is greater control of interviewers and less chances of mistakes being made as the data is collated
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1) when the fixed cost of selecting a sample is high.
2) when there is high variability in the characteristic been measured.
3) when the population is small.
Less time and less cost for a sample.
A random sample is better than a census because it takes less time and costs less.
this is brief, but a census gathers data from the whole group/poulation, wheras a sample investigation on takes a small part of the group/poulation, a sample
A sample survey is asked of a limited group of people, while a census is conducted in an attempted to get an answer from all people in a geographical area.
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