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کامپیوتر و شبکه::
مطلع کلیدی
, key informant interviews) or by using secondary data from written or printed sources (i.e. health statistics from health centres).
Instead, one can examine and/or re-measure a sample of inliers to estimate an error rate (i.e. contacting enumerators or key informants to ask additional questions).
When blank cases were inserted or the record type was required even though key informants may not have that type of data or duplicate records were entered, then cases must be deleted from the data file.
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