Position measurements

Position measurements

1. They are statiscal indicators that allow the data to be summarized into one, or to divide its distribution into intervals of the same size.

2. Used to measure and divide

3. Non- central position measures

   • Non- central tendency
     • Quantiles
       • The quartile: Divide the distribution into four equal parts, there are three quartiles.
       • The quintile: Divide the distribution into five parts, there are four quintiles.
       • The decile: Divide the data into ten equal parts and there are nine deciles.
       • The percentile: Divide the distribution into hundred parts and there are ninety- nine percentiles.
   • Central

4. Center position measurements

   • Allows to summarize the distribution of the data in a single central value.
     • The arithmetic, geometric, or harmonic mean: Are three central measures that indicate a weighted average of the data.
       • The geometric one is applied in series that show percentage growth
       • The harmonica is useful in the analysis of investments in the stock market
     • The median: divides the distribution into two equal parts, it is very useful in variables such as income or wages.
     • The fashion: It informs us about those that are repeated on more occasions, it is very useful in market research.