UGC NET Paper 1 GA 2008 June Solved Paper

Sampling follows the following principles:
• Large sample size so that true characteristics of the population are revealed
• Clearly defined sample units for objectivity and optimization (optimum results with maximum efficiency and minimum cost)
• Random sample selection so that each and every unit of the universe has an equal probability of being selected
• Systematic sampling and same units of sample used throughout the study for objectivity and validity