Question

Which of the following sampling methods would bias the set of responses? Select all that…

Which of the following sampling methods would bias the set of responses? Select all that apply.

Answer

100% (3 rated)

I can’t choose — I don’t have the list of sampling methods. Please paste the answer choices.

Explanation (quick guide so you can check options):

  • Commonly biased methods: voluntary (self‑selected) sampling, convenience sampling, purposive (judgment) sampling, and snowball sampling — these tend to over‑represent people who are easy to contact or who have strong opinions.
  • Methods that are usually unbiased when done correctly: simple random sampling, stratified random sampling, and cluster sampling (provided clusters are randomly selected and within‑cluster variation is handled).
  • Watch for undercoverage or nonresponse problems (e.g., telephone lists that exclude cell‑only households) — these make otherwise random designs biased.

Send the specific choices and I’ll mark which ones are biased and explain why.