How To Find the Interquartile Range (IQR) In SPSS

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In this video tutorial, I will show you how to find the first quartile (Q1; 25th percentile), third quartile (Q3; 75th percentile) and the interquartile range (IQR) by using SPSS.

The IQR is a number to represent the difference between Q1 and Q3 which represents the middle dispersion of a dataset.

SPSS version used: 25

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I have no idea who you are, but I love you for this video. Thanks.

SarahNara
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when comparing two groups with Mann Whitney test, how we find 25th-75th quartile?

lebowski
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this video helped me gain full understanding of IQR. thanks.

latoyabexley
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It's weird when I type in your exact data I get the IQR to be 76, 96. Any idea why?

ImTheCookieMonster
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im getting 73.76 for manually doing this
any idea why is getting different answer on paper?

sohailsheikh