Position measurements

Position measurements

1. QUARTILE

   • The distribution is divided into 4 equal parts.
     • Q1
       • 25% observations
     • Q2
       • Half statistic
     • Q3
       • 75% observations

2. DECILES

   • Divide the data into 10 equal parts
     • D1
       • Yalue that exceeds 10% of the observations and is surpassed by the remaining 90%
     • D8
       • Yalue that exceeds 80% of the observations and is surpassed by the remaining 90%
     • D5
       • Half statistic

3. PERCENTILE

   • Values ​​corresponding to 1%, 2% ... and 99%
     • P50
       • Median
       • Q2
       • d5

4. Split the data set

5. The data should be ordered from smallest to largest.