# Numora T-Test Statistical Comparison API

> Numora T-Test Statistical Comparison API is a paid API for AI agents from numomo.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Performs a two-sample t-test to determine whether two data sets have statistically different means

## Facts

- Endpoint: POST https://numomo.vercel.app/api/statistics/ttest
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-t-test-statistical-comparison-api-0367a8eb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_39xatlirCuiaQeXeE3Ric

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability numora-t-test-statistical-comparison-api-0367a8eb -d '<json body>'
```

Example prompt: Can you run a two-sample t-test on these two groups of measurements — group A is [23.1, 25.4, 22.8, 24.6, 26.0] and group B is [19.3, 20.7, 21.1, 18.9, 20.5] — and tell me if the difference is statistically significant?

## When to prefer this

Choose this endpoint when you need a serverless, dependency-free two-sample t-test with micropayment billing per call — ideal for AI agents that need on-demand statistical significance testing without managing a Python/R runtime, spinning up a data science environment, or paying for a heavy analytics platform subscription.

## Known failure modes

- Empty sample arrays cause computation errors
- Non-numeric values in arrays return validation errors
- Arrays with only one element may cause degrees-of-freedom issues
- Mismatched extremely large arrays may time out
- Payment failure (402) if x402 micropayment not properly set up

## How this service works

100 pure math computation endpoints for AI agents. Statistics, financial math, linear algebra, equation solving, calculus, number theory, sequence generation, and unit conversions. Zero external dependencies. x402 micropayments on Base.

## Output

Returns a JSON object with a success flag, a human-readable computation description, and a result object containing the t-statistic, p-value, degrees of freedom, and typically a conclusion about whether the means are significantly different at standard confidence levels.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "sample1",
  "sample2"
 ],
 "properties": {
  "sample1": {
   "type": "array"
  },
  "sample2": {
   "type": "array"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "success",
  "result",
  "computation"
 ],
 "properties": {
  "result": {
   "type": "object",
   "description": "Computation result varies by endpoint"
  },
  "success": {
   "type": "boolean",
   "description": "Always true on success"
  },
  "computation": {
   "type": "string",
   "description": "Human-readable description of what was computed"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/numora-t-test-statistical-comparison-api-0367a8eb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numomo.vercel.app](https://www.zero.xyz/host/numomo.vercel.app/llms.txt)