The phrase "estimation procedure" refers to a systematic way of making an educated guess or calculation about something. It involves using available information and techniques to come up with a likely or approximate value or result. Full definition
As well, where possible, 2011 Census data will be used as auxiliary information in National Household Survey estimation procedures to partially offset some of the remaining biases. (worthwhile.typepad.com)
Statistics Canada adapted its collection and estimation procedures in order to mitigate, to the extent possible, the effect of non-response bias. (macleans.ca)
Using the more appropriate 55 - proxy dataset with the same estimation procedure (which involved retaining K = 10 PCs of the proxy data), yields a higher probability of 84 % that recent decadal warmth is unprecedented for the past millennium. (realclimate.org)