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.
In descriptive statistics, the interquartile range tells you the spread of the middle half of your distribution.Quartiles segment any distribution that’s ordered from low to high into four equal parts. The interquartile range (IQR) contains the second and third quartiles, or the middle half ...
Python program to find the IQR in NumPy # Import numpyimportnumpyasnp# Creating a numpy arrayarr=np.array([7,4,6,6,4,7,4,3,6,7])# Display original arrayprint("Original array:\n",arr,"\n")# Calculating percentilep75, p25=np.percentile(arr, [75,25])# Finding iqrres=p75-p25#...
How do you find the IQR in NumPy? NumPy's mean() and nanmean() Methods How to make numpy.argmax() return all occurrences of the maximum? Averaging over every n elements of a NumPy array How to find the groups of consecutive elements in a NumPy array?
# how to find interquartile range in R > x =c(5, 10,12,15,20,25,27,30, 35) > summary(x) Min. 1st Qu. Median Mean 3rd Qu. Max. 5.00 12.00 20.00 19.89 27.00 35.00 > IQR(x) [1] 15 Here is the data set of our earlier example having been put through both the summary and...
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. Like this: D2-D1. Press Enter and voilà, your IQR is calculated...
Example: Using the interquartile range to find outliersWe’ll walk you through the popular IQR method for identifying outliers using a step-by-step example.Your dataset has 11 values. You have a couple of extreme values in your dataset, so you’ll use the IQR method to check whether they...
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 o...
IQR = Interquartile range These equations give you two values, or “fences“. You can think of them as a fence that cordons off the outliers from all of the values that are contained in the bulk of the data. Example question:Use Tukey’s method to find outliers for the following set ...
Enter the following formula for determining the 1st quartile (Q1) given below: =QUARTILE($C$5:$C$16,1) Step 2: Enter the formula to calculate the 3rd quartile (Q3) given below: =QUARTILE($C$5:$C$16,3) Step 3: Determine the IQR, which is the Inter-Quartile Range (it represent...