'''Hot-Deck Imputation''' replaces missing data with comparable data from the same set. "Hot-deck imputation is a means of imputing data, using the data from other observations in the sample at hand." <ref>http://analytics.ncsu.edu/sesug/1999/075.pdf</ref> For example, suppose census officials were unable to count the number of people in a given house and decided to fill in the missing data using hot-deck imputation. They would use the data from a similar house in the same area, and substitute the number of people in that house for the missing data.
'''Hot-Deck Imputation''' replaces missing data with comparable data from the same set. "Hot-deck imputation is a means of imputing data, using the data from other observations in the sample at hand." <ref>http://analytics.ncsu.edu/sesug/1999/075.pdf</ref> For example, suppose census officials were unable to count the number of people in a given house and decided to fill in the missing data using hot-deck imputation. They would use the data from a similar house in the same area, and substitute the number of people in that house for the missing data.
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This paper discusses various types of imputation as well as their benefits and problems: http://nces.ed.gov/StatProg/2002/appendixb3.asp
"Although imputation was used in the 1940 and 1950 censuses to determine characteristics of the population, it was not used to determine the actual population count for apportionment purposes until 1960." <ref>''Utah v. Evans'', 182 F. Supp. 2d 1165 (2001)</ref>
"Although imputation was used in the 1940 and 1950 censuses to determine characteristics of the population, it was not used to determine the actual population count for apportionment purposes until 1960." <ref>''Utah v. Evans'', 182 F. Supp. 2d 1165 (2001)</ref>