1. For Windows or Linux - Press Ctrl+D
2. For MacOS - Press Cmd+D
3. For iPhone (Safari) - Touch and hold, then tap Add Bookmark
4. For Google Chrome - Press 3 dots on top right, then press the star sign
Enter your set of numbers in the input field. Numbers must be separated by commas.
Press Enter on the keyboard or on the arrow to the right of the input field.
In the pop-up window, select “Find the Lower or First Quartile”. You can also use the search.
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 first quartile (or lower quartile) Q1 is defined as a value containing an f-value of 0.25. This is the same as the twenty-fifth percentile. The first quartile is calculated by interpolating between f-values that are directly below and above 0.25 to find the value corresponding to the f-value of 0.25.