Difficulties in Sampling

Card Set Information

Author:
chanchan27104
ID:
293098
Filename:
Difficulties in Sampling
Updated:
2015-01-15 15:53:01
Tags:
statistics
Folders:
ST 311
Description:
Sampling's a bitch
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  1. Bad Sampling Frame
    • common type of sampling error
    • subjects are missing from sampling frame
    • difficult to get good lists of a population
  2. Undercoverage
    part of the population could not be selected
  3. Non-Response
    selected, but don't have a response to all or part of the survey
  4. Response Bias
    have a response but it is not a good reflection of the truth
  5. Response Rate
    • percentage of the contacted individuals who gave a response
    • Small response rate may indicate a problem
  6. Other Errors That May Occur In Sampling
    • Data Entry Errors
    • Asking the right/wrong questions (sensitivity)
    • Wording of the Questions

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