Third Quartile Calculator. N is the number of observations. The first quartile Q1 the second quartile Q2 and the third quartile Q3.
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It is expressed as IQR Q 3 -. The following calculator will find mean mode median lower and upper quartile interquartile range. The third quartile or 75th percentile xH Q3 is the value such that 75 of the observations are less than x H How are quartiles calculated This calculator uses the following system to find the quartiles.
It is expressed as IQR Q 3 -.
Qi i n1 4 th obsevation Q 3 i n1 4 Q 3 3 20 1 4 th observation. What is the interquartile range. Click the calculate button provided next to the box. The first quartile lower quartile QL is equal to the 25th percentile of the data.
