Interquartile range - Wikipedia
In descriptive statistics, the interquartile range (IQR) is a measure of statistical dispersion, which is the spread of the data. [1] The IQR may also be called the midspread, middle 50%, fourth spread, or …
Interquartile Range (IQR): How to Find and Use It - Statistics by Jim
Aug 29, 2021 · The interquartile range is the middle half of the data that lies between the upper and lower quartiles. In other words, the interquartile range includes the 50% of data points that are above …
How to Find Interquartile Range (IQR) | Calculator & Examples
Sep 25, 2020 · Whereas the range gives you the spread of the whole data set, the interquartile range gives you the range of the middle half of a data set. When is the interquartile range useful? You can …
Interquartile Range in Statistics - GeeksforGeeks
Dec 10, 2025 · The Interquartile Range (IQR) tells us how spread out the middle 50% of the data is. It is less affected by extreme values and gives a better idea of how tightly or loosely the central data …
Quartile Calculator | Interquartile Range Calculator
Nov 4, 2025 · This quartile calculator and interquartile range calculator finds first quartile Q 1, second quartile Q 2 and third quartile Q 3 of a data set. It also finds median, minimum, maximum, and …
Interquartile Range (IQR): What it is and How to Find it
What is an Interquartile Range? The interquartile range (IQR) is the central half of any dataset. While a range is a measure of where the beginning and end are in a set, an interquartile range is a measure …
Interquartile Range (IQR) in Statistics
May 11, 2025 · What Exactly is the Interquartile Range (IQR)? The Interquartile Range (IQR) is a measure of statistical dispersion. It represents the range encompassing the middle 50% of a dataset.
How to Interpret Interquartile Range (With Examples) - Statology
May 11, 2021 · The interquartile range of a dataset, often abbreviated IQR, is the difference between the first quartile (the 25th percentile) and the third quartile (the 75th percentile) of the dataset.
Interquartile range review (article) | Khan Academy
Interquartile Range (IQR) Interquartile range is the amount of spread in the middle 50 % of a dataset. In other words, it is the distance between the first quartile (Q 1) and the third quartile (Q 3) .
Interquartile range - Math.net
In statistics, the interquartile range (IQR) is a measure of how spread out the data is. It is equal to the difference between the 75th and 25th percentiles, referred to as the third (Q3) and first quartiles …