Question

Some students carried out field study on sources of energy by sampling the households around the school.

1. Identify two sampling technique the students may have used during the study. 
2. Give three advantages of sampling the households for the study. 

Answer 1

1.    
   • Stratified sampling
   • Clustered sampling
      
2.    
   • Saves time for the study
   • It costs less
   • High data accuracy