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  1. Jan 2023
  2. stats.libretexts.org stats.libretexts.org
    1.4: Collecting Data
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    1. mushy.room 18 Jan 2023
      70% of the students were day students, it makes sense to ensure that 70% of the sample consisted of day students

      stratified sampling identifies the 'strata' or groups, and ensures the sample numbers reflect population numbers

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    stats.libretexts.org/Bookshelves/Applied_Statistics/Book:_An_Introduction_to_Psychological_Statistics_(Foster_et_al.)/01:_Introduction/1.04:_Collecting_Data