Weighting
...survey unit represents. For example, one respondent may represent 500 other people in New Zealand. Why is the data weighted? The way the NZCASS sample is designed means that different respondents have different chances of being selected and so their responses cannot be treated equally. For example, NZCASS incorporates a Māori booster sample, which gives Māori a higher chance of being selected for the survey. If this was not adjusted for, the overall survey results would be biased towards the...