# How To Find Interquartile Range (2023)

## 1. Interquartile range (IQR) (video) - Khan Academy

• Duration: 6:12Posted: Aug 4, 2015

• Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

## 2. Calculating the Interquartile Range: A Quick Guide - Quality Gurus

• Dec 18, 2022 · It is calculated as the difference between the 75th percentile (Q3) and the 25th percentile (Q1) of the data and is a way to identify the spread ...

• The interquartile range (IQR) is a measure of the dispersion of a dataset. It is calculated as the difference between the 75th percentile (Q3) and the 25th percentile (Q1) of the data and is a way to

## 3. 3 Ways to Find the IQR - wikiHow

• To find the IQR, start by arranging the numbers in your data set from lowest to highest. Then, divide your data set in half and find the median of both the ...

• The IQR is the "interquartile range" of a data set. It is used in statistical analysis to help draw conclusions about a set of numbers. The IQR is often preferred over the range because it excludes most outliers. Read on to learn how to...

## 4. 4.5.1 Calculating the range and interquartile range

• Sep 2, 2021 · To calculate the range, you need to find the largest observed value of a variable (the maximum) and subtract the smallest observed value ...

• Statistics: Power from Data! is a web resource that was created in 2001 to assist secondary students and teachers of Mathematics and Information Studies in getting the most from statistics. Over the past 20 years, this product has become one of Statistics Canada most popular references for students, teachers, and many other members of the general population. This product was last updated in 2021.

## 5. Interquartile Range (IQR) | Definition, Formula & Examples - BYJU'S

• Therefore, the interquartile range is equal to the upper quartile minus lower quartile. ... How to Calculate the Interquartile Range? The procedure to calculate ...

• The interquartile range is defined as the difference between the third and the first quartile. Learn how to find the IQR with help of illustrative examples here at BYJU’S today!

## 6. How to Find Interquartile Range | Statistics and Probability - Study.com

• Step 2: Find the median and separate the data to the left of the median and to the right of the median. Step 3: Find the first quartile (Q1) by finding the ...

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## 7. Quartiles & Interquartile Range | Calculation & Examples - Study.com

• Oct 21, 2021 · To find the interquartile range, simply take the upper quartile and subtract the lower quartile: 7.5 - 2.5 = 5. The interquartile range for this ...

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## 8. InterQuartile Range (IQR) - sph.bu.edu

• May 17, 2016 · There are 5 values above the median (upper half), the middle value is 77 which is the third quartile. The interquartile range is 77 – 64 = 13; ...

• When a data set has outliers or extreme values, we summarize a typical value using the median as opposed to the mean.  When a data set has outliers, variability is often summarized by a statistic called the interquartile range, which is the difference between the first and third quartiles. The first quartile, denoted Q1, is the value in the data set that holds 25% of the values below it. The third quartile, denoted Q3, is the value in the data set that holds 25% of the values above it. The quartiles can be determined following the same approach that we used to determine the median, but we now consider each half of the data set separately. The interquartile range is defined as follows:

## 9. Interquartile Range(IQR) Formula - Cuemath

• The Interquartile range formula helps in finding the difference between the third quartile and the first quartile. The Interquartile range formula measures the ...

• The Interquartile Range formula finds the difference between the two extreme observations or data points of the distribution. Understand more about the IQR formula along with its formulas and FAQs.

## 10. Interquartile Range Calculator

• This simple tool works out the interquartile range of a set of numbers by calculating the 25th and 75th percentiles, and then subtracting the former from ...

• A simple interquartile range calculator.

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