representativeness
representativeness — 名詞
1. the degree to which a small group shows the same traits and patterns as the whol
代表性
樣本反映母體特質的程度
the degree to which a small group shows the same traits and patterns as the whole group it comes from, allowing reliable conclusions about the larger population
Wei assessed the focus group's representativeness by matching its makeup against the latest census.
Wei 將焦點團體的組成與最新人口普查比對，以評估其代表性。
collocation: assess the representativeness of [sample]
Ananya doubted the representativeness of a survey that only reached people with internet access.
Ananya 質疑一項只接觸到網路使用者的調查之代表性。
Recruiting every subject from a single hospital in Osaka cost Dr. Niran's study its representativeness.
由於所有受試者都來自大阪的同一家醫院，Niran 醫師的研究失去了代表性。
Diego improved the representativeness of his poll by calling both landlines and mobile phones.
Diego 同時撥打市話和手機來進行民調，提升了樣本的代表性。
Amara noted that excluding non-English speakers from the jury list destroyed any claim to representativeness.
Amara 指出，將不諳英語的人排除在陪審團名單之外，使其代表性蕩然無存。
- typicality
less technical; refers to how ordinary or characteristic something is rather than statistical accuracy
- generalizability
narrower; asks whether findings from a sample can be applied to other populations or settings
- unrepresentativeness
direct opposite; rarely used outside academic writing
- bias
in statistics, a systematic error that makes a sample unrepresentative
文法句型
the representativeness of + [sample / group / data]
用法筆記
Uncountable noun used in formal and academic contexts. Almost always paired with 'of': 'the representativeness of the sample'. Contrast with 'representation', which refers to the act of speaking or acting on behalf of someone, or the presence of a group in an institution.