TDIGEST.TRIMMED_MEAN

Syntax
TDIGEST.TRIMMED_MEAN key low_cut_quantile high_cut_quantile
Available in:
Redis Stack / Bloom 2.4.0
Time complexity:
O(n)

Estimate the mean value from the sketch, excluding observation values outside the low and high cutoff quantiles.

Parameters:

  • key: The name of the sketch (a t-digest data structure)
  • low_cut_quantile: Exclude observation values lower than this quantile
  • high_cut_quantile: Exclude observation values higher than this quantile

Return

Simple string reply estimation of the mean value. Will return "nan" if the sketch is empty.

Examples

redis> TDIGEST.TRIMMED_MEAN t-digest 0.1 0.9
"9.500001"

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