I have a long sequence containing $n$ values like below:
[1,2,1,3,1,1,3,3,1,200,1,1,40,1,....,1]
in which, the majority of the values are smaller than $k$ (unknown), and a few numbers are bigger than $3*k$. I want to filter out those few values in the sequence.
I thought if somehow I can find the average of those frequent values (which are below $k$) then I can use it as a threshold. But I do not know $k$.
Any opinion?