Interquartile Range (IQR) | Math with Mr. J

Welcome to Interquartile Range (IQR) with Mr. J! Need help with finding the interquartile range? You're in the right place!
Whether you're just starting out, or need a quick refresher, this is the video for you if you're looking for help with interquartile range. Mr. J will go through a two interquartile range examples and explain the steps of how to find the interquartile range.
✅ Understanding the Lower Quartile: • Understanding the Lowe...
✅ Understanding the Upper Quartile: • Understanding the Uppe...
✅ How to Find Quartiles (Even Set of Data): • How to Find Quartiles ...
✅ How to Find Quartiles (Odd Set of Data): • How to Find Quartiles ...
✅ How to Find Quartiles (Even and Odd Sets of Data): • Quartiles | Lower Quar...
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Hopefully this video is what you're looking for when it comes to finding quartiles and the interquartile range.

[@MathwithMrJ]

✅ Thanks so much for watching!
✅ You can find more videos relating to quartiles in the description.
✅ Just an FYI as far as odd data sets go... With an odd set of data, you can either include or exclude the median from the lower and upper half of the data. In this video, I used the exclusive method. This means that the median is excluded from the lower and upper half of the data when finding the lower and upper quartile (this means that I excluded the median 38 from the lower and upper half). The other method is called the inclusive method. This means that you include the median in both the lower and upper half when finding the lower and upper quartile. For example, the halves would look as follows with the inclusive method (lower = 25, 32, 32, 38 and upper = 38, 45, 50, 51). Both methods can be used, but each will give a slightly different result.

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when, I had my math test, we had 12 numbers with youdidn't mencien how to do in the video :( ples upload a vie about it ples :)

[@yasinnikpour3566]

if its an even amount of numbers, you have to find the mean (average) of the 6th and 7th number. That would be your median.

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IQR is for 7th and 8th

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