Which of the following statements are false? (i) If a sample is selected using random sampling, it will be free from bias. (ii)
A、sampling frame is a numbered list of all items in a sample. (iii) In cluster sampling there is very little potential for bias. (iv) In quota sampling, investigators are told to interview all the people they meet up to a certain quota.
A、(i), (ii), (iii) and (iv)
B、(i), (ii) and (iii)
C、(ii) and (iii)
D、(ii) only
A、sampling frame is a numbered list of all items in a sample. (iii) In cluster sampling there is very little potential for bias. (iv) In quota sampling, investigators are told to interview all the people they meet up to a certain quota.
A、(i), (ii), (iii) and (iv)
B、(i), (ii) and (iii)
C、(ii) and (iii)
D、(ii) only
【参考答案及解析】
A sampling frame is a numbered list of all items in a population (not a sample). Cluster sampling involves selecting one definable subsection of the population which therefore makes the potential for bias considerable.
A sampling frame is a numbered list of all items in a population (not a sample). Cluster sampling involves selecting one definable subsection of the population which therefore makes the potential for bias considerable.