Nonsampling errors cause bias, whereas sampling mistakes usually cause variability.
Often, a sample is more accurate than a CENSUS due to nonsampling error.
Why is a sample better than a census?
Sample surveys provide the following advantages over censuses: lower cost, both financially and in terms of manpower. reduces the amount of time needed to gather, analyze, and produce findings because it calls for a reduced operational footprint.
The aforementioned factors make it possible to ask inquiries with greater specificity.
What is difference between census and sample method?
Every single unit in the universe is examined using the census approach.
Only a small sample of the population's items are examined while using the sampling approach.