Statistics

Statistics

1. Frequency table

   • Organization of statistical data in table form.
     • Frequency distribution
       • Absolute(fi)
         • Number of times it appears a certain value.
       • Absolute cumulative frequency (Fi)
         • Sum of the previous "fi".
       • Relative(Fr)
         • fi/N
       • Relative cumulative frequency (F)
         • Sum of the previous "FR".
   • Ejemplo

2. Variability measurement

   • How spread out the data are
     • Range
       • Difference between the largest datum and the smallest datum.
       • Rmax-Rmin
     • Variance
       • Variability of a series of data taking as reference the median.
     • Standard deviation
       • How spread out the data are from the median.
     • Coefficient of variation
       • Relative
         • Standard deviation/ Median
       • Percentage
         • (Standard deviation/ Median)*100%
     • Median absolute deviation
       • Average of the absolute value of the deviations.
   • Ejemplo

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