future while and some other filter to that use the feature one but you just remove the mean from your filter types you may end up if you try those features one by one you will may end up but not see but not seeing any improvement in your model but using them but in your model you may come up with some interesting improvements why because those two features are quite related between them one is the mean of the group and the other is just the difference of the filter X to the two this mean and maybe this feature two is