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This is definitely possible within Alteryx, it would depend on your own experitse on the data and what you would consider as an outlier.
I have attached a workflow which would provide the framework for this. You can use the Summarize to generate Mean and Standard Variations from the data and then filter all of the data based on these values.
Check out @MarqueeCrew's excellent Modify Outliers macro that you can download from the gallery. You can easily identify outliers, get data on their values (average/upper/lower limites etc) and have the option to remove them from your data and process downstream tools without them.