🎯 Define ‘Sampling Frame’.

🎯 Define ‘Sampling Frame’.

Answer: A sampling frame is the complete list or database of all units in the target population from which the sample is actually drawn. It acts as a bridge between the theoretical population and the sample.

Examples:

• Voter list → sampling frame for election survey.

• School register → sampling frame for student survey.

• List of villages from Census → frame for rural surveys.

  
  

Cross Question: What happens if the sampling frame is incomplete or outdated?

• Undercoverage Bias: Some population units are not represented.

• Overcoverage: Some units appear multiple times.

• Outdated Information: Leads to misrepresentation (e.g., migrated households still listed). Hence, frame quality directly affects reliability of estimates.