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Biostatisics-1 (Scales of Measurement (continuous(不太分) (interval…

- - - - arbitrary
  - - - exclusive attribute
    - - degree
- - - - range
      - standard deviation
        
        symmetric
      - coeffcient of variation（v.s.variance）
      - interquartile range
        
        asymmetric
    - - mean
        
        symmetric
        
        X(上面一橫)：部分平均
        
        E(x)：expected mean
        
        μ：population mean
      - median
        
        asymmetric
      - geometric mean
        
        asymmetric
      - mode
      - 受outliner 影響：Mean>GM>Median
    - - 三次方;negative-->右偏，positive-->左偏
    - - 峰度