sampling bias
bias in which a sample is collected in such a way that some members of the intended population are less likely to be included than others
en-US/ˈsæmplɪŋ ˈbaɪəs/
en-GB/ˈsɑːmplɪŋ ˈbaɪəs/
bias in which a sample is collected in such a way that some members of the intended population are less likely to be included than others