Match List-I with List-II
| List-I (Survey) | List-II (Type of bias) | ||
| (A) | A survey asks, “Don’t you agree that the new flyover has made travel much easier?” | (I) | Convenience bias |
| (B) | A survey of the households of a town calls only the numbers listed in an old telephone directory, so many households are left out | (II) | Response bias |
| (C) | A TV channel asks its viewers to send an SMS if they wish to give their opinion | (III) | Undercoverage |
| (D) | A student questions only her own neighbours because they are close by | (IV) | Voluntary response bias |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A)-(II), (B)-(III), (C)-(IV), (D)-(I)
Each survey gives a biased picture of the population, but for a different reason.
(A) A survey asks, “Don’t you agree that the new flyover has made travel much easier?”
This matches (II) Response bias: the wording of the question pushes people towards one answer.
(B) A survey of the households of a town calls only the numbers listed in an old telephone directory, so many households are left out
This matches (III) Undercoverage: a part of the population gets too little representation in the sample.
(C) A TV channel asks its viewers to send an SMS if they wish to give their opinion
This matches (IV) Voluntary response bias: people choose for themselves whether to take part.
(D) A student questions only her own neighbours because they are close by
This matches (I) Convenience bias: the sample is made of people who are easily available.