---
title: "Record Study"
method: POST
path: "/api/variation/msa/studies"
tags: ["variation"]
---

# Record Study

`POST /api/variation/msa/studies`

## Request

- Base URL: `https://www.ucai.net` (the document declares no server; this is the origin it was published from)
- URL: `https://www.ucai.net/api/variation/msa/studies`
- Auth: none declared

## Request body

- StudyRequest
  - `ev` number, required: 重复性（设备）
  - `av` number, required: 再现性（人员）
  - `pv` number, required: 零件间变异
  - `denominator` string, nullable: total_variation / tolerance
  - `tolerance` number, nullable
  - `study_id` string, required
  - `characteristic` string, required
  - `gage` string, required
  - `parts` integer, required
  - `operators` integer, required
  - `trials` integer, required
  - `line_id` string, nullable
  - `purpose` string, nullable
  - `attribute_kappa` number, nullable
  - `study_date` string, date, nullable
  - `gage_increment` number, nullable: 量具最小刻度，用于 10:1 分辨力法则
  - `distinct_readings` integer, nullable: 跨规格与零件公差范围能读出的不同读数个数
  - `interaction_p` number, nullable: 操作员 × 零件交互项的 p 值
  - `sigma_input` boolean: EV/AV/PV 传的是原始 σ（引擎按不确定度系数换算）还是已换算的估计误差
  - `hygiene` object, nullable: 研究卫生：blind / remeasured / parts_span_range / strategy_on_change / master_samples

## Response `200`

Successful Response

- object

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/ucai/apis/abs-core.md) · [All operations](https://skmtc.dev/ucai/apis/abs-core/llms.txt) · [OpenAPI document](https://skmtc.dev/ucai/apis/abs-core/revisions/1502a61b5620?raw)