Note: Answer is from google must read handouts and other material. Type question you will get answer easily. Do not copy paste. Q.1 What are two broad categories of errors in data collected by sample surveys? Q.2 Describe some of the methods for reducing these errors. Ans.1 The total error of the survey estimate results from the two types of error: sampling error, which arises when only a part of the population is used to represent the whole population; and. non-sampling error which can occur at any stage of a sample survey and can also occur with censuses. Ans. 2 The biggest techniques for reducing sampling error are: Increase the sample size. ... Divide the population into groups. ... Know your population. ... Randomize selection to eliminate bias. ... Train your team. ... Perform an external record check.
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