Onrepresentatieve

Onrepresentatieve is a Dutch adjective meaning not representative or lacking representativeness. It is used to describe data, samples, observations, or groups that do not adequately reflect the characteristics of a larger population. In research and statistics, an onrepresentatieve sample can lead to biased conclusions and reduced external validity.

Usage and grammar: The form onrepresentatieve is used before de-words in the singular, for example onrepresentatieve steekproef (an unrepresentative sample) and onrepresentatieve waarneming (an unrepresentative observation). For plural nouns, the construction remains onrepresentatieve followed by the plural noun, as in onrepresentatieve steekproeven. The prefix on- functions as a negation of representatief.

Causes and consequences: Unrepresentativeness can arise from sampling bias, nonresponse bias, coverage bias, or measurement error. It may also occur when the sample is drawn from a subgroup that is not representative of the population of interest. The consequence is biased estimates, distorted patterns, and limited generalizability.

Addressing unrepresentativeness involves methods such as random or stratified sampling, weighting, and sensitivity analyses to gauge how results would differ under a representative sample. Researchers strive to maximize representativeness to support valid inferences and reliable conclusions.

See also:

- representativiteit

- steekproefbias

- selectiebias

- externe validiteit

- representatief

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