SELECTION BIASES
\sɪlˈɛkʃən bˈa͡ɪəsɪz], \sɪlˈɛkʃən bˈaɪəsɪz], \s_ɪ_l_ˈɛ_k_ʃ_ə_n b_ˈaɪ_ə_s_ɪ_z]\
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The introduction of error due to systematic differences in the characteristics between those selected and those not selected for a given study. In sampling bias, error is the result of failure to ensure that all members of the reference population have a known chance of selection in the sample.
By DataStellar Co., Ltd
Word of the day
Snake's-head
- Guinea-hen flower; -- so called in England because its spotted petals resemble the scales of a snake's head.