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## Getting different answers every time

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### Getting different answers every time

Getting different answers depending on what form of technology I use.. Quartiles
So when calculating the third quartile the method I use is (n/4)*3, where n is the amount of data points. If the answer is an integer, I take the mean of that positions data point and the value above. If its a decimal, I always round up and find that value.

However I'm getting conflicting answers..

My data set is : 37, 43, 43, 44, 44, 46, 46, 47, 47, 47, 47, 48, 51, 52, 53, 53, 54

Doing it with the method above gives 51 as the third quartile. Typing =quartile() on excel gives the answer as 51. If I type it into my graphical calculator, the answer I get is 51.5?

What's going wrong here??
https://19216881.org/ https://1921681001.link/ https://19216801.digital/
If I use median and median again, I get 51.5..
Kevin256 offline
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