Upper or Third Quartile Calculator

Use our simple online calculator to calculate the Upper or Third Quartile value of any series of numbers.

How to use the Upper or Third Quartile Calculator

Step 1

Enter your set of numbers in the input field. Numbers must be separated by commas.

Step 2

Press Enter on the keyboard or on the arrow to the right of the input field.

Step 3

In the pop-up window, select “Upper or Third Quartile”. You can also use the search.

What is Upper or Third Quartile in Math

Quartiles are values that divide a data table (or part of it) into four groups containing an approximately equal number of observations. The total volume is divided into four equal parts: 25%, 50%, 75% 100%. The F-value of the third quartile (or upper quartile) Q3 is 0.75.

Quartiles are calculated as follows. The f-value of each value from the data table is calculated. where i is the index of the value and n is the number of values. The third quartile is calculated by interpolating between f-values that are directly below and above 0.75 to find the value corresponding to the f-value of 0.75.