Sampling & Questionnaire Design

JKSSB Panchayat Account Assistant · Mathematics/Statistics · 15 practice questions with answers and explanations: 3 Easy, 7 Medium, 5 Hard.

Sample questions

Sample Easy question 1

Selecting a sample by drawing numbered slips from a box is an example of:

  1. Quota sampling
  2. Simple random sampling
  3. Judgement sampling
  4. Convenience sampling
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Answer: B. The lottery method gives every unit an equal chance of selection: simple random sampling.

Sample Medium question 2

Judgement (purposive) sampling depends mainly on:

  1. A fixed interval
  2. Equal probability for all units
  3. Random number tables
  4. The investigator's discretion
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Answer: D. The investigator picks the units they believe are representative, which can introduce personal bias.

Sample Hard question 3

Increasing the sample size generally has what effect on sampling error?

  1. It has no effect on sampling error
  2. It always increases sampling error
  3. It tends to reduce sampling error
  4. It eliminates all types of error
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Answer: C. Larger samples tend to better represent the population, reducing sampling error.

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