I used to work at the US Bureau of the Census, and the statisticians in our bran

Question

I used to work at the US Bureau of the Census, and the statisticians in our branch reviewed all of the economic data reported by the firms. In some special cases, we would actually visit the firms and record their responses to the census questions. Suppose a business manager told me that the value of their assets is $430,000, but I mistakenly recorded the response as $340,000. What type of error have I committed?

Sampling error

Cluster error

Stratification error

Nonsampling error

Sampling error

Cluster error

Stratification error

Nonsampling error

Explanation / Answer

As this is a human error which is incorrectly recording the data, this is not a sampling error but a non sampling error. Therefore this is a D) Non sampling error. Note that a non-sampling error is a statistical error caused by human error to which a specific statistical analysis is exposed.

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