Third Quartile Formula. The Quartile is the average of the two numbers. What it basically means is that in a data set with N data points.
Since quartiles divide the number of data points evenly the range is not the same between quartiles ie Q3 - Q2 Q2 - Q1 and is instead known as the interquartile range IQR. The Quartile Formula for Q3. Quartile of ungrouped data.
The formula for quartiles is given by.
The number after the data range can represent either Q1 Q2 Q3 or Q4 so you can use any number 1-4 in the function instead of 1. N1 1 4 th term is the lower quartile. Its 75 the third quartile. For example you can use QUARTILE to find the top 25 percent of incomes in a population.
