Statistics Frequency

Statistics Frequency

1. Position Measurement

   • Central
     • They are the means (arithmetric, geometric, harmonic), the median and the mode.
   • No Central
     • It does not reflect any central tendency, as its name indicates, it is also called "Quantiles"

2. Measures of dispersion

   • absolute
     • is the difference between the maximum and minimum
   • relative
     • is the standard deviation and the absolute value of the arithmetric measure
   • typed variable
     • its mean is "0" and its variance is "1", Mean and variance
   • inequality of Tchebicheff
     • It is to be able to find the frequency between intervals, with the method of the Russian mathematician

3. shape measurements

   • differ in the shape or aspects of their histograms or bar charts
   • asymmetrical
     • A distribution is symmetric when to the left and right of its mean there are the same number of values
   • Pointing or kurtosis
     • The kurtosis coefficient of a distribution determines the degree of flattening that it has. with respect to another distribution called the normal distribution

4. box or whisker plots

   • A box and whisker plot makes it easy to visually determine central tendency, variability, asymmetry and the existence of anomalous values ​​in a frequency distribution.

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