Data collection and survey design

Definitions

• Population
• Sample

Probability based

• Random
• Stratified/cluster
• Systematic

Non-probability

• Convenience
• Snowball
• Selected

Designing surveys

• Usability/commitment
• Clarity
• Definite quantifiable items
• Single issue items
• Multiple questions asking same thing in multiple ways
• Avoid bias or charged language

Issues of Identity

• Anonymity and identifiabilty
• Human subjects
• Use: academic, humanitarian, commercial