Revision 8bdd9b6795f6a78ffca1f4e0649531d71fa51f88 authored by Marge Bot on 13 September 2022, 10:56:47 UTC, committed by Marge Bot on 13 September 2022, 10:56:47 UTC
Co-authored-by: Ole Krüger <ole.kruger@trili.tech> Approved-by: Swann Moreau <evertedsphere@gmail.com> Approved-by: Emma Turner <1623821-emturner@users.noreply.gitlab.com> Approved-by: Nicolas Ayache <nicolas.ayache@nomadic-labs.com> Approved-by: Andrea Cerone <andrea.cerone@trili.tech> See merge request https://gitlab.com/tezos/tezos/-/merge_requests/6285
statistics.ml
(*****************************************************************************)
(* *)
(* Open Source License *)
(* Copyright (c) 2021 Nomadic Labs <contact@nomadic-labs.com> *)
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(* *)
(* The above copyright notice and this permission notice shall be included *)
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let mean list =
let count = ref 0 in
let sum = ref 0. in
List.iter
(fun value ->
incr count ;
sum := !sum +. value)
list ;
!sum /. float !count
let median list =
let sorted = List.sort Float.compare list |> Array.of_list in
let count = Array.length sorted in
if count > 0 then
if count mod 2 = 0 then
let i = count / 2 in
(sorted.(i - 1) +. sorted.(i)) /. 2.
else sorted.(count / 2)
else invalid_arg "Long_test.median: empty list"
let stddev list =
let list_mean = mean list in
let squared_diffs =
List.map
(fun x ->
let d = x -. list_mean in
d *. d)
list
in
sqrt (mean squared_diffs)
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