some polling agencies ask people to call a te...
some polling agencies ask people to call a telephone number and give their response to a question. (a) list an advantage and a disadvantage of a survey conducted in this manner. (b) what sampling technique is used in such a survey? (a) what is an advantage of this type of survey? choose the correct answer below. a. using this type of method ensures that each segment of the population is represented b. this type of survey allows for people to reply more than once. c. no biases are created since anyone within the population can participate. d. this usually results in a savings in the survey cost
Answer
# Brief Explanations:
- For (a), in telephone - based self - response surveys, one major advantage is cost - savings. There's no need for in - person interviewers, printed materials for large - scale distribution etc. Option A is incorrect as it doesn't ensure all population segments are represented (e.g., those without phones). Option B is a disadvantage as it can skew results. Option C is wrong because self - selection bias exists.
- For (b), this is a form of voluntary response sampling where individuals choose to call in and respond.
# Answer:
(a) D. This usually results in a savings in the survey cost
(b) Voluntary response sampling