LESSON 1

• SAMPLING


  Process of selecting sample
• POPULATION


  Entire aggregation - target audience
• SAMPLE


  Subset of population
• REPRESENTATIVENESS


  How well the sample represents the population
• SAMPLING ERROR


  Overrepresentation or underrepresentation
• SAMPLING TECHNIQUES


  • Non-probability
  • Probability
• Non-probability sampling


  • Biased, limited findings
• Non-probability sampling techniques


  • Convenience
  • Snowball
  • Purposive
  • Quota
• Probability sampling


  • Random equal chances of being selected
• Probability sampling techniques


  • Simple random
  • Systematic
  • Stratified
  • Cluster
• Systematic sampling


  Uses kth interval formula: k = sampling interval, N = population, n = desired sample