In this guide, I will show you how to find the interquartile range (IQR) in SPSS. I will also show you how to find the first (Q1) and third (Q3) quartiles.
The interquartile range (IQR) contains the second and third quartiles, or the middle half of your data set.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....
the 50th percentile (the median) and the 75th percentile. The calculator then subtracts the 75th percentile from the 25th percentile to find the interquartile range using the formula Q3– Q1= IQR. Just type your numbers into the text box and click the “Find the interquartile range” button...
Find Q1 (the median of the set of numbers below the median): 3, 5, 7, 8, 9. Find Q3 (the median of the set of numbers above the median): 11, 15, 16, 20, 21. Subtract Q1 from Q3 : 16 – 7 = 9. Solution: The IQR is 9. Back to Top Find an interquartile range for ...
Iqr function Finding the interquartile range in R is a simple matter of applying the IQR function to the data set, you are using. It has the format of IQR(data set) and returns the interquartile range for that data set. Its companionsummary functionhas the format of summary(data set) ...
Let's try using this knowledge to find the interquartile range for a data set in the following two examples. The first example will show how to find the IQR with an odd number of values in a data set, while the second example will show how to find the IQR with an even number of...
Which data set has the smallest interquartile range? Which data set has the largest interquartile range? Refer to the box plot below to answer the question: What is the interquartile range for this data set? Find the Interquartile rage (IQR) for the following data set: 6, 7, 12, ...
2. Next, we need to calculate Q3. To calculate Q3 in Excel, simply find an empty cell and enter the formula ‘=QUARTILE(array, 3)‘. Again, replacing the ‘array‘ part with the cells that contain the data of interest. 3. Finally, to calculate the IQR, simply subtract the Q1 value...
STEP 1: Open your Excel worksheet and identify the dataset range.STEP 2: Select the cell where you want the IQR to appear. For Q1, enter =QUARTILE.INC(A2:A21,1).STEP 3: For Q3, enter =QUARTILE.INC(A2:A21,3).STEP 4: To find the IQR, subtract the Q1 value from the Q3 value....
This article explains how to compute an Interquartile Range (IQR) in the R programming language.The tutorial is mainly based on the IQR() R function. So let’s have a look at the basic R syntax and the definition of IQR() first:...