Question 2. (Chapter 4). Help! A researcher was interested in Aucklanders’ opinions about rates and rate increases. He c

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Question 2. (Chapter 4). Help! A researcher was interested in
Aucklanders’ opinions about rates and rate increases. He considered
3 different approaches to gathering information on this. Method 1:
Randomly select 1,000 names from the Auckland phone book. Then hire
a team of people to phone each person on the list and interview
them. Method 2: Place advertisements in community papers asking
people to go online and fill in a questionnaire. Method 3: Use
council records to assemble a list of all houses currently in
Auckland City. Randomly select 1,000 houses from this list and post
a questionnaire to each address asking the oldest person living in
the house to fill in and return the questionnaire. (a) For which of
the methods, if any, is non-response bias a potential problem? (b)
For which of the methods, if any, is self-selection bias a
potential problem? (c) Which of the methods, if any, is subject to
interviewer effects? (d) Which of the methods, if any, is subject
to sampling errors? (e) For each of the methods, give an example of
why there may be selection bias.