sampling Methods

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  • Created by: patrick99
  • Created on: 24-04-14 23:28
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  • sampling Methods
    • random sampling
    • oppertunity sample
      • easy to obtain(people available att)
      • unrep of TP
  • +representative sample
    • time consuming(large taget population)
  • Self-selected
    • sampling Methods
      • random sampling
      • oppertunity sample
        • easy to obtain(people available att)
        • unrep of TP
    • low attr
  • unrep
    • Self-selected
      • low attr
  • experiments
    • lab
      • +establish causual relationship
      • LEV
    • Quasi
      • allows research when Iv= unethical
    • RMD
      • prac,fatiq,aim-validity
      • +counterbalancing
    • ID
      • participant variables
      • +lack oder ef,prac,
    • MPD
      • -time,diff 2 find mtach
      • no order effect
  • Field experiment
    • +HEV
    • less control
  • -less control over variable
    • Quasi
      • allows research when Iv= unethical
  • Measures of central tendancies
    • mean
      • affected by outlier- inflate/deflate average
      • +easy to calcu
    • median
      • not all scores used
      • not affected by outliers
    • mode
      • +shows common /important scors
      • not usefulif several modal values
    • Quantitative data
      • analysis/comparison
      • may not explain diff

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