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Imputation

Imputation involves inserting a value when a respondent has not provided a valid response. For the 2006 Census, four variables were imputed where there was no valid response:

  • age
  • sex
  • usual residence, and
  • work and labour force status.

Refer also to ‘age imputation’, 'sex imputation’, ‘usual residence imputation’ and ‘work and labour force imputation’.

Industry

Industry is the type of activity undertaken by the organisation, enterprise, business, or unit of economic activity within which a person aged 15 years and over is employed.

Internal migrants

This term refers to all people usually resident in New Zealand (aged five years and over) who had changed their usual (permanent) address and had moved between subject geographic areas during the intercensal period, 6 March 2001 to 7 March 2006. These people were required to have specified a New Zealand residential address for both of these dates.

Internal migration

Internal migration is the movement of population within the national boundaries of a country, resulting from changes of usual residence.

Internal migration relates to people usually resident in New Zealand (aged five years and over) at the time of the 2006 Census who were not living in the same subject geographic area five years prior to the census. Excluded are people who did not specify a usual New Zealand address for census night 2006 or five years earlier (2001) and were classified as having 'no fixed abode', or had an 'overseas' or 'New Zealand not further defined' address.

Iwi

The concept of iwi has changed over time. Today it is the focal economic and political unit of the traditional Māori descent and kinship, based hierarchy of:

Waka (founding canoe)
|
Iwi (tribe)
|
Hapū (sub-tribe)
|
Whānau (family).
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