{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.calculatorx.com/schemas/engineering.uncertainty.type_a.input.json",
  "title": "Type A Uncertainty — input",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "values": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "number"
      },
      "description": "Repeated observations. Sample s needs n≥2 when ddof=1."
    },
    "ddof": {
      "type": "integer",
      "enum": [
        0,
        1
      ],
      "description": "Delta degrees of freedom. 1 = Bessel (default), 0 = population."
    }
  },
  "required": [
    "values"
  ],
  "description": "Type A standard uncertainty u_A = s/√n from repeated observations. Not GUM combination and not Monte Carlo. (calculation_version 1.0.0)"
}