English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Post-enumeration surveys are used to assess the quality of censuses. To set up such a survey, the size of the sample to be surveyed must be determined. If the sample design requires several strata, the design effect, which is the ratio of the variance of the two-source estimator to the variance of the single-source estimator for a given sample size, allows an indirect calculation. Another method is to use the sampling variance formula for a given sample size. The sample must have a sufficient total number of geographic subdivisions that are too small. A complete calculation of the sample size is implemented on an example from the 2020 Chinese post-enumeration survey.

Determining the sample size of a post-enumeration survey: The case of China, 2020