Welch two-sample or one-sample t-test
Welch two-sample or one-sample t-test: t statistic, degrees of freedom, p-value, confidence interval and Cohen's d.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
1182 msmedian answer time
$0.02listed price per call
$0.02price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://math-stats.x402tookit.com/t-test
| Category | Everything else |
|---|---|
| Provider host | math-stats.x402tookit.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.02 | 1182 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"a": "27.5,21.0,19.0,23.6,17.0,17.9,16.9,20.1,21.9,22.6,23.1,19.6,19.0,21.7,21.4",
"b": "27.1,22.0,20.8,23.4,23.4,23.5,25.8,22.0,24.8,20.2,21.9,22.1,22.9,20.5,24.4"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"a": {
"description": "Sample A values",
"type": "string"
},
"alpha": {
"description": "Significance level 0.001 to 0.2 (default 0.05)",
"type": "number"
},
"b": {
"description": "Sample B values (two-sample test)",
"type": "string"
},
"mu": {
"description": "Hypothesised mean for a one-sample test (use instead of b)",
"type": "number"
}
},
"required": [
"a"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"alpha": {
"type": [
"null",
"number"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"cohensD": {
"type": [
"null",
"number"
]
},
"confidenceInterval": {
"properties": {
"level": {
"type": [
"null",
"number"
]
},
"lower": {
"type": [
"null",
"number"
]
},
"upper": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"degreesOfFreedom": {
"type": [
"null",
"number"
]
},
"difference": {
"type": [
"null",
"number"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"meanA": {
"type": [
"null",
"number"
]
},
"meanB": {
"type": [
"null",
"number"
]
},
"nA": {
"type": [
"null",
"number"
]
},
"nB": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"pValueTwoSided": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"significant": {
"type": [
"boolean",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"standardError": {
"type": [
"null",
"number"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"tStatistic": {
"type": [
"null",
"number"
]
},
"test": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}