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Imputation

Imputation is the replacement of missing information with what is expected to be true information when looking at other questionnaire responses. For the 2013 Census, four variables were imputed where a valid response was missing:

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

See also ‘Age imputation’, ‘Sex imputation’, ‘Usual residence imputation’, and ‘Work and labour force status imputation’.

Income bands

The information currently used to collect income bands is gross annual income. This is defined as income received by a person, family, or household before the deduction of income tax, levies, or withholding payments. Income includes income from wages and salaries, self-employed income, property and rental income, dividends and investments, social insurance, superannuation, government assistance schemes, and private transfers, such as child support. Excluded are social transfers in kind such as public education or government-subsidised health care services; reimbursement of expenses, money received from borrowing, contingent income, unrealised income; and irregular payments, such as lump sum inheritance payments.

See also ‘Grouped total personal income’, ‘Total personal income’, ‘Grouped combined parental income for couples with child(ren)’, ‘Grouped total extended family income’, ‘Grouped family income’ and ‘Grouped total household income’.

Industry

Industry is the type of activity undertaken by the organisation, enterprise, business, or unit of economic activity that employs one or more people aged 15 years and over.

Internal migrants

Internal migrants include all people aged five years and over who are usually resident in New Zealand, who had changed their usual (permanent) address, and had moved between geographic areas in the period between 5 March 2008 and 5 March 2013. These people specified a different New Zealand residential address for both dates.

Internal migration

Internal migration is the change of people’s usual residence within the national boundaries of a country. It relates to people aged five years and over who are usually resident in New Zealand but at the time of the 2013 Census lived in a different subject geographic area than at 5 March 2008.

Excluded are people who did not specify a usual New Zealand address for 5 March 2013 or 2008, those who were classified as having ‘no fixed abode’, had an ‘overseas’ address, or a ‘New Zealand not further defined’ address.

Iwi

Iwi are the focal economic and political units of the Māori people of New Zealand. Iwi are based on the traditional Māori descent and kinship-based hierarchy of:

Waka (founding canoe)

        Iwi (tribe)

                Hapū (sub-tribe)

                        Whānau (family).

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