sandbox-stats

name	sandbox-stats
description	Mean, median, quantiles, and linear regression inside a Code node or CodeAct action, with simple-statistics running in the guest

Statistics in the sandbox

Specifier: @nodetool-ai/sandbox-stats. One module, simple-statistics. Import it at the top of the body.

Column summaries

import { mean, median, standardDeviation, quantile } from "@nodetool-ai/sandbox-stats";

const xs = inputs.values;
return {
  mean: mean(xs),
  median: median(xs),
  sd: standardDeviation(xs),
  p90: quantile(xs, 0.9)
};

Linear regression

import { linearRegression, linearRegressionLine } from "@nodetool-ai/sandbox-stats";

const fit = linearRegression(inputs.points);
const line = linearRegressionLine(fit);
return { m: fit.m, b: fit.b, at10: line(10) };

inputs.points is [[x, y], ...].

Gotchas

• Named imports. Import only the functions you use.
• Empty arrays throw. Guard before mean([]).
• This is not TFJS. Classification and embeddings stay on @nodetool-ai/sandbox-tfjs.