Data sources and methodology for iwi affiliation in the 2023 Census outlines the data sources and methodology used to determine values for the iwi affiliation variable in the 2023 Census, including use of alternative data sources to mitigate missing census responses.
Editing, data sources, and imputation in the 2023 Census provides more information on the processes used for other census variables.
Summary of key points
By design, the 2023 Census combines census response data and alternative data sources.
The iwi affiliation variable is one of the highest-priority variables released in the 2023 Census. It is used to provide iwi, iwi-related groups, and Māori with information to support their aspirations, to inform decisions that affect iwi and Māori, and to meet the Crown's partnership obligations under Te Tiriti o Waitangi.
However, non-response in the 2023 Census means that some data is missing. Without alternative data sources, iwi affiliation would not be available for many people of Māori descent who are included in census data. This missingness would also differ across different subpopulations.
The methodology for iwi affiliation in the 2023 Census was co-developed and co-tested by the Data Iwi Leaders Group (Data ILG) and Stats NZ. Working with Te Kāhui Raraunga Charitable Trust (the mahi arm of Data ILG), we have ensured that iwi Māori data expertise was prioritised in the design of the methodology. The methodology uses alternative data sources to fill missing and residual values for the iwi affiliation variable. This builds on mahi undertaken by Data ILG and Stats NZ to produce 2018 Census iwi estimates. While alternative data sources were used for some other variables in the 2018 Census, this is the first time alternative data sources have been used for iwi affiliation in official census data.
The alternative data sources in this paper include historical census data (from the 2013 and 2018 Censuses), as well as administrative (admin) data from the Ministry of Education (MoE) and the Ministry of Social Development (MSD). The methodology also includes the use of parents', grandparents', or great-grandparents' iwi affiliation where parental relationships are found in Department of Internal Affairs (DIA) data.
The use of alternative data sources increases the percentage of the 2023 Māori descent census usually resident population that have a value for iwi affiliation from 716,208 people (73.2 percent) to 954,042 people (97.5 percent).
Mana Ōrite Relationship Agreement provides more information on the relationship between Stats NZ and the Data Iwi Leaders Group.
Te Kāhui Raraunga provides more information on the Trust.
Enquiries
Ngā puna raraunga me ngā tikanga mahi mō te piringa ā-iwi i te Tatauranga 2023
Ko tā Data sources and methodology for iwi affiliation in the 2023 Census he whakatakoto i ngā puna raraunga me ngā tikanga i whāia hei whakatau i ngā tauanga mō te tokomaha o ngā iwi i roto i Tatauranga 2023, tae atu ki te whakamahinga puna raraunga tāpiri hei whakakī whāwhārua, nā te korenga urupare a ētahi ki te tatauranga.
Ko tā Editing, data sources, and imputation in the 2023 Census he hora i ētahi atu mōhiotanga mō ngā hātepe i whāia mō ētahi atu tauanga.
Whakarāpoporotanga o ngā kōrero matua
He mea āta hoahoa te tuinga o ngā raraunga urupare tatauranga i roto i Tatauranga 2023 Census, ki ētahi atu puna raraunga.
Ko te tāupe piringa ā-iwi tētahi o ngā tāupe tino hira ka whakaputaina i roto i te Tatauranga 2023. Ka whakamahia tēnei tauanga hei hora mōhiotanga ki ngā iwi, ki ngā rōpū ā-iwi, me ngāi Māori hei tautoko i ō rātou wawata, hei whirinakitanga mō ngā whakatau ka pā ki ngā iwi me ngāi Māori, hei whakatutuki hoki i ngā herenga o te kōtuitanga o te Karauna i raro i Te Tiriti o Waitangi.
Ahakoa tērā, nā te korenga e urupare a ētahi ki te Tatauranga 2023, kei te ngaro ētahi raraunga. Me i kāhore ērā atu puna raraunga, kua kore anō e wātea he mōhiotanga piringa ā-iwi mō te tokomaha o ngā uri Māori kāore i uru ki ngā raraunga tatauranga. Ka āhua rerekē anō tēnei korenga puta noa i ētahi atu taupori whāiti.
I whakawhanaketia, i whakamātauria tahitia hoki ngā tikanga kohikohi mō te piringa ā-iwi e Te Kāhui Raraunga/Data Iwi Leaders Group (Data ILG) me Tatauranga Aotearoa. Nā te mahi tahi ki Te Kāhui Raraunga Charitable Trust (te rōpū mahi a Te Rōpū Raraunga o Ngā Kaihautū ā-iwi), kua whakatāhuhutia ki mua ngā pūkenga raraunga Māori i roto i te hoahoatanga o ngā tikanga mahi. Tā ēnei tikanga mahi he whakamahi puna raraunga tāpiri hei whakakī i ngā tauanga e ngaro ana, e toe ana rānei mō te tāupe piringa ā-iwi. Hei whakawhānui tēnei i ngā mahi i hāpainga e Data ILG me Tatauranga Aotearoa hei hanga i ngā matapae ā-iwi mō Tatauranga 2018. Ahakoa i whakamahia ētahi atu puna raraunga tāpiri mō ētahi atu tāupe i Tatauranga 2018, kātahi anō ērā atu puna raraunga ka whakamahia mō te piringa ā-iwi i roto i ngā raraunga tatauranga whai mana.
Ko ērā atu puna raraunga tāpiri i roto i tēnei pepa ko ngā raraunga tatauranga o tau kē (mai i ngā tatauranga o 2013 me 2018), tae atu ki ngā raraunga whakahaere mai i Te Tāhuhu o Te Mātauranga, me te Manatū Whakahiato Ora (MSD). Ka whakamahi hoki tēnei tikanga mahi i ngā piringa ā-iwi o ngā mātua, o ngā tūpuna, o ngā tūpuna tuarua rānei, ina kitea ngā hononga o ngā mātua i roto i ngā raraunga o Te Tari Taiwhenua /Department of Internal Affairs (DIA).
Nā te whakamahinga o ērā atu puna raraunga ka whakapikia te ōrau o te taupori uri Māori noho i konei mō te nuinga o te wā mō 2023, ka whai tauanga mō te piringa ā-iwi, atu i te 716,208 tāngata (73.2 ōrau) ki te 954,042 tāngata (97.5 ōrau).
Kei te Mana Ōrite Relationship Agreement ētahi atu kōrero mō te hononga i waenga i Tatauranga Aotearoa me te Kāhui Raraunga o Ngā Kaihautū ā-Iwi.
Kei Te Kāhui Raraunga ētahi atu kōrero mō te Tarahiti.
Ngā pātai
ISBN 978-1-991307-17-0
