Crate commonstats 

CommonStats — WASM-first statistical core.

Base (always compiled): special functions (special), the mergeable accumulator core (accum), descriptives (descriptive), kernel density and auto-histograms (density), distribution-free transforms (transform), and hypothesis tests (htest), plus the fixed-bin histogram + ECDF (accum::histogram). Feature-gated: rng (counter-based Philox + Lemire bounded ints), resample (draw-addressable index generation, the NullDist/BootDist distribution accumulators, and a serial reference driver), and dist (continuous + discrete distribution objects with CDF/SF/PDF/quantile).

This crate ships only user-facing docs; design notes and specs live in the umbrella dev repo.

let g1 = [89., 88., 97., 92.];
let g2 = [84., 79., 81., 83.];
let r = commonstats::t_test_two(&g1, &g2, commonstats::VarAssumption::Welch).unwrap();
assert!(r.p_value < 0.05);

Re-exports

pub use error::StatError;

pub use nan::NanPolicy;

pub use accum::HistResult;

pub use accum::Histogram;

pub use descriptive::count;

pub use descriptive::cov;

pub use descriptive::describe;

pub use descriptive::kurtosis;

pub use descriptive::max;

pub use descriptive::mean;

pub use descriptive::median;

pub use descriptive::min;

pub use descriptive::pearson;

pub use descriptive::range;

pub use descriptive::sd;

pub use descriptive::skewness;

pub use descriptive::sum;

pub use descriptive::var;

pub use descriptive::Ddof;

pub use descriptive::Describe;

pub use htest::anova_one_way;

pub use htest::chi2_gof;

pub use htest::chi2_independence;

pub use htest::cor_test;

pub use htest::f_test_var;

pub use htest::t_test_one;

pub use htest::t_test_paired;

pub use htest::t_test_two;

pub use htest::CorMethod;

pub use htest::TestResult;

pub use htest::VarAssumption;

Modules

accum

The mergeable-accumulator core. merge is the whole game: one op gives one-pass streaming, parallel chunking, and incremental recompute — never downdating.

density

Kernel density estimation and auto-binned histograms.

descriptive

Batch descriptives — thin finalize() wrappers over the accum accumulators. One source of truth: each fn folds a (NaN-omitted) slice and reads out.

error

The crate’s single error type. One enum, returned by every fallible public API, hand-rolled Display to stay libm-only and WASM-clean.

htest

Hypothesis tests (named htest to avoid Cargo’s tests/ integration dir). Test statistics come off the accumulators; p-values come straight from the special functions (no distribution-object suite yet).

nan

Missing-data policy — the single home for how the crate treats NaN.

special

Centralized special-function surface: all transcendental math the crate needs has one home so accuracy and cross-host behavior have a single choke point.

transform

Data transformations: ranking, normal scores, power transforms, PIT family.