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Bio-statistics, Control group ( a baseline or something to compare to),…

- - - - how to calculate
        
        First determine your level of confidence, 1-α.
        
        Find the Z- or t- critical value that corresponds to your level of confidence, using the appropriate Z- or t- table.
        
        Calculate the margin of error by multiplying your Z- or t- critical value by the standard error.
        
        Calculate your CI based around the point estimate.
- - - - Primary data collection
      - Secondary data analysis
    - - Study data
      - Production data
    - - Exploratory
      - Hypothesis-driven
        
        subpopulation
        
        Exposure ( aka the cause
        in the hypothesis)
        
        types
        
        risk factor
        
        protective factor
        
        non-realted ( no relationship seen towards outcomes)
        
        outcome
    - - types
        
        production data
        
        Data entry manual
        
        Internal (maybe external) reports
        
        study data
        
        Codebook
        
        Survey ( the actual survey document )
        
        Instructions to the data collectors
        
        Published articles and reports
    - - prepares you for regression anaylsis
      - it answers the hypothesis
  - - - direct
      - Inverse aka indirect