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(calculating error (deviation (the difference between the mean and actual…

- - - - rumus
    - - an estimate of the average variability (spread ) of a set of data measured in the same units of measurements as the original data
  - - - represent the same thing
        
        the variability in the data
        
        how well the mean represents the observed data
        
        the "FIT" of the mean to the data
        
        error
- - - - 2 kinds of statistics in language research
        
        descriptive statistics
        
        display, summarise, and describe the data
        
        inferential statistics
        
        interpret the data
- - - - measures of central tendency
        
        it represents the centre of a distribution
      - measures of dispersion
        
        reflect spread of values in distribution