Secondary data collected

• We used a range of secondary data (information from readily available sources e.g. published materials)

  • census data
  • demographics of Castleton
  • population pyramid
• Advantages of using secondary data

  • compare reliable numerical data of Castleton's age population
  • economical - saves efforts and expenses
  • saves time
  • can be used to fill the gaps on what we didn't find out from primary data
• Disadvantages of using secondary data

  • may not be visual or easy to interpret
  • may not be suitable to answer our research question
  • data could be outdated -> unreliable
  • data may contain errors
  • collection method is unknown (sample size, surveys, or questionnaires might be misleading)