Pull aggregate series numbers through API

I am trying to pull some summary statistics for my universe, Russell 1000, through the API. Does anyone know if this is possible?

For example, I'd like to know the median P/E ratio of the Russell 1000 as well as the std dev of P/E ratios of the Russell 1000.

You could use FMedian("PEExclXorTTM",#All) in ranks_ranks, data_universe or data endpoints, but you need a vendor data license to use FMedian. There is no function available to get the standard deviation of the factor values for a universe.