Removing Outliers From a Dataset

[theg.ksinstinct]

Great video! I did not know before how to get z-scores with this easy way, I always computed it using the formula. More appropriate way to deal with outliers, in case when you don't want to keep them and just remove them, then get the z-score for your variable of interest just as the lady did. Check the z-score and the variable together by both ascending and descending order of the z-score if you want, just as the lady did. Then had to the data section, select cases, select if condition is satisfied, write the formula in the formula portion - ABS(z_price) <= 3 and hit continue and then ok. Boom! your outliers are now gone.

[RectalDesign]

God bless you. Every piece of documentation and every guide I've read tells me "just delete the crazy values lol."

[JustKevStockholm]

Boxplots are also very useful - from a visual standpoint - when checking for outliers :)

[rsxZ]

How can i determine the critical value which helps delimitate the outliers. For instance your value was 3.29, but why >?

[benotoole]

trying to do this for university and we have the same surname, the universe works in weird ways

[menzir]

Do you have any references I can use to cite this method in my thesis?

[myfictionalthoughts]

Thanks for the advice, but how do I know which ones are the actual outliers? My data is not as simple as this one in this video.

[mattadoritmo]

Holy crap! Thank you so much for this! This just helped solve a problem I've been working on for a couple days

[martinbrestovansky]

thanks Siobhan, really useful video, but what if I have outliers on both sides of the histogram? How can I set up the filter in Variable View Missing Column in this case?

[sharist]

Hey, thanks for the amazing video. Would it somehow possible to quote the techniques you used? really would like to use this in my thesis. Kind regards :)

[Electrify]

Why 3.29? Isn't 1.96 was the key number?

[chunnjh]

Very useful video! Thanks for uploading!

[whiteshadow]

thank you very nice explanation, been frustrated all day, thanks

[Brickkzz]

Is there an automated way of removing outliers from positive and negative end? I have a data set of 120 000 cases and hundreds of outliers...

[zivleong]

if i delete it~~the previous test such as normality test and compute mean need to redo?or will change automatically?

[PurpleRawr]

Great video. I don't understand the 'id' section though. Is this just the IV? What if I have two IV's? Thanks!

[vkunst]

Thank you for your video, do you perhaps know who I can cite for this method?

[MrKKrid]

how i define PC mom column? It use mean or something ?

[ScroogeMD]

But if I exclude a case for a certain variable, shouldn't I exclude this case for all other variables too?

[novitaasastr]

hello i want to ask, if i want to do the run test, i have to use the new data or old data that still have the outlier?

*sorry for my bad english