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In every survey based on a probability sample, the problem arises of missing information, in addition to problems of sampling error and response error. Entire interviews may be missing because of non-response (refusals, not-at-homes, etc.) or because dwelling units which should have been in the sample were missed. An interview may be taken with one designated respondent in a family but not with others. Also, interviews may be incomplete. This article explains the techniques that can be employed to deal with missing information. [ABSTRACT FROM AUTHOR]

The article discusses the effects of weighting and distributive price controls on retail food price comparisons. According to the author, many studies have focused on retail food prices in independent food stores, supermarkets and chain stores, however weighting in these studies has not been attempted. the author notes the exception of the United States Federal Trade Commission's "Chain Story Inquiry." This study displays weighting based on standard food allowances and also reflects the impact of statutory price control rights.