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Acton resident presents town-priorities survey, warns of sampling bias
Summary
Eric Heals, a resident and associate member of the Transportation Advisory Committee, presented a self‑conducted town spending/priorities survey and urged caution when interpreting informal polls.
Eric Heals, a resident and associate member of the Transportation Advisory Committee, presented a self‑conducted town spending/priorities survey and urged caution when interpreting informal polls.
Heals said he sent 4,035 emails between Aug. 22 and Sept. 21, that 1,798 were opened (a 44.6 percent open rate), 236 clicked links (5.8 percent) and 86 surveys were completed (2.1 percent). He described how non-random samples can skew results and used classroom examples such as movie-theater…
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