I have one, two, three, four, five, six, seven, eight, nine numbers so there's going to be So the first thing we wanna do is figure out the median here. There doesn't seem toīe an eight or a nine but then we get to a 10 and then we get to 11, 12. So then there is a sixĪnd then there's a seven. Then I have another four and then I have anotherįour and let's see, are there any fives? No fives but there is a six. You could just drag these, you could just click andĭrag these numbers around to sort 'em but I'll just do it by hand. Alright, so let's first sort it and if we were actually doing this on the Khan Academy exercise, Range of the data set and I encourage you to do thisīefore I take a shot at it. Sort the data from least to greatest and then find the interquartile The following data points represent the number of animal crackers I'm just gonna solve it on my scratch pad. Let's get some practice calculating interquartile ranges and I've taken some exercises from the Khan Academy exercises here. (Deskriptive_Statistik) (my definition used) But keep up the good work! Everyone makes mistakes and only from them we learn and better ourselves! D There seem to be enough problems in understanding statistical methods as it is. ANd since there seem to be many misunderstandings with the mathematical theory behind it I think the time and sweat to learn it is better spend elsewhere. PPS: I really don't get why the IQR is tought in the 6th grade since even bachelor-graduates don't use it that much in most cases. But it doesn't mean you should repeat it. PS: I know you are not the only ones that are making this mistake. So please please plaese make a new video in which you at least aknowledge that there are different definitions of the IQR and in your case even the Quantiles(Or here Quartiles which are the 0.25-, 0.50- and 0.75-Quantiles particularly) Now I know that the IQR is defined differently from field to field, but as far as I know the quantile function x_p is defined the same for all fields of science or at least in statistical mathematics, so how come you are using it so inconsistently?Īnd as far as I experienced it "my" method and the method in the video will get the same results more often than not but here it's inconsistent.Īlso just as a sidenote: The algorithm at gets another IQR of 7 for that data set. With that I would get a IQR=Q_3 - Q_1= 12-6=6 I learned that a p-quantile for any number 0 have a feeling, that many people who use the IQR or guantiles in general don't really know how to get them or what they are.
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