← The evidence ledger
Evidence row 2201575
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://math-stats.x402tookit.com/t-test
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 8e8a87681266c26af8f2b46334fc2ac3b4c796133580acc42ae1f1b3fea965c7
- Leaf
- 0xd25f91793987629538003dbf4942492f3af67e180beb79f4e751d2c074cd218e
What was observed
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"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
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{
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"transactionVersions": [
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{
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{
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"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
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],
"description": "Welch two-sample or one-sample t-test: t statistic, degrees of freedom, p-value, confidence interval and Cohen's d.",
"extensions": {
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"asOf": "2026-10-11T06:26:07.896Z",
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"upper": -0.349237066192
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"degraded": false,
"degreesOfFreedom": 24.98852929,
"difference": -2.16666666667,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"meanA": 20.82,
"meanB": 22.98666667,
"nA": 15,
"nB": 15,
"notChecked": [
"the assumptions: independent observations and roughly normal data (or large samples)",
"practical importance (a tiny effect can be 'significant' with enough data)",
"…2 more"
],
"pValueTwoSided": 0.021378001,
"reasons": [
"Two-sided test. 'Not significant' means the data do not rule out no difference, not that there is none.",
"Significance is not importance: check the effect size (Cohen's d: about 0.2 small, 0.5 medium, 0.8 large)."
],
"significant": true,
"source": "computed locally",
"standardError": 0.882424510014,
"summary": "Welch two-sample t-test (unequal variances): t = -2.455, df = 24.99, two-sided p = 0.0214 -> significant at alpha 0.05; difference -2.16667 (95% CI -3.9841 to -0.349237).",
"tStatistic": -2.455356398,
"test": "Welch two-sample t-test (unequal variances)",
"verdict": "SIGNIFICANT"
},
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"lastUpdated": "2026-11-01T23:38:13.164Z",
"quality": {
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"lastCalledAt": "2026-11-01T23:38:13.015Z"
},
"resource": "https://math-stats.x402tookit.com/t-test",
"serviceName": "Math and Statistics",
"tags": [
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"hypothesis-test",
"p-value"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Welch two-sample or one-sample t-test: t statistic, degrees of freedom, p-value, confidence interval and Cohen's d."
}What the leaf hashes
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Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
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- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af