HALOWERKAgent Tools
abtest / evaluate
Reads one conversion experiment two ways at once. Frequentist: two-proportion test, p value, confidence interval on the absolute lift, and the sample size the requested minimum detectable effect needs at the requested power. Bayesian: Beta-Binomial posteriors, probability the variant is better, expected loss either way, credible intervals - closed form, not sampled, so the numbers repeat exactly. looks_taken carries the adjusted threshold and the rate you actually ran at.
POST https://tools.halowerk.com/v1/abtest/evaluateEingaben
| Feld | Typ | Pflicht | Beschreibung |
|---|---|---|---|
| control | object | Ja | Baseline group. conversions may not exceed visitors. |
| variant | object | Ja | Group under test. conversions may not exceed visitors. |
| confidence_level | number | Nein | |
| alternative | string | Nein | two_sided asks whether the groups differ, greater whether the variant is above the control. |
| minimum_detectable_effect_rel | number | Nein | Relative effect the test should be able to find, e.g. 0.1 for ten percent above the control rate. |
| power | number | Nein | Probability of finding that effect if it is there. |
| looks_taken | integer | Nein | How often the running test has been evaluated. Above 1 the threshold is adjusted and the real false positive rate is reported. |
| prior_alpha | number | Nein | Beta prior, successes. 1 with prior_beta 1 is uniform. |
| prior_beta | number | Nein | Beta prior, failures. |
Vollständiges Eingabeschema anzeigen
{
"type": "object",
"required": [
"control",
"variant"
],
"properties": {
"control": {
"type": "object",
"required": [
"visitors",
"conversions"
],
"properties": {
"visitors": {
"type": "integer",
"minimum": 1
},
"conversions": {
"type": "integer",
"minimum": 0
}
},
"description": "Baseline group. conversions may not exceed visitors."
},
"variant": {
"type": "object",
"required": [
"visitors",
"conversions"
],
"properties": {
"visitors": {
"type": "integer",
"minimum": 1
},
"conversions": {
"type": "integer",
"minimum": 0
}
},
"description": "Group under test. conversions may not exceed visitors."
},
"confidence_level": {
"type": "number",
"minimum": 0.5,
"maximum": 0.9999,
"default": 0.95
},
"alternative": {
"type": "string",
"enum": [
"two_sided",
"greater"
],
"default": "two_sided",
"description": "two_sided asks whether the groups differ, greater whether the variant is above the control."
},
"minimum_detectable_effect_rel": {
"type": "number",
"minimum": 0.001,
"maximum": 5,
"default": 0.1,
"description": "Relative effect the test should be able to find, e.g. 0.1 for ten percent above the control rate."
},
"power": {
"type": "number",
"minimum": 0.5,
"maximum": 0.999,
"default": 0.8,
"description": "Probability of finding that effect if it is there."
},
"looks_taken": {
"type": "integer",
"minimum": 1,
"maximum": 100,
"default": 1,
"description": "How often the running test has been evaluated. Above 1 the threshold is adjusted and the real false positive rate is reported."
},
"prior_alpha": {
"type": "number",
"minimum": 0.0001,
"maximum": 1000,
"default": 1,
"description": "Beta prior, successes. 1 with prior_beta 1 is uniform."
},
"prior_beta": {
"type": "number",
"minimum": 0.0001,
"maximum": 1000,
"default": 1,
"description": "Beta prior, failures."
}
}
}Veröffentlichtes Eingabebeispiel
{
"control": {
"visitors": 4820,
"conversions": 241
},
"variant": {
"visitors": 4790,
"conversions": 302
},
"confidence_level": 0.95,
"minimum_detectable_effect_rel": 0.1,
"looks_taken": 3
}Ergebnis & Dokumentation
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Quelle dieser Seite: der veröffentlichte HALOWERK-Katalog. Stand: 2026-11-01, 15:19 UTC.
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