标准差 / statistics.stddev

使用场景 / Purpose

Statistics: stddev. 本技能对提供的参数执行计算，输入输出契约如下。文档例子来自已实现函数的固定验收样例；网页本身不执行代码。

输入字段 / Parameters

字段	类型	要求	约束与说明
`values`	"array"	必填 Required	`{"items": {"type": "number", "minimum": -1000000000000.0, "maximum": 1000000000000.0}, "minItems": 1, "maxItems": 1000}`
`sample`	"boolean"	必填 Required

输入例子 / Example input

{
  "values": [
    2,
    4,
    4,
    4,
    5,
    5,
    7,
    9
  ],
  "sample": false
}

预期输出 / Expected output

2.0

完整输入 JSON Schema

{
  "type": "object",
  "properties": {
    "values": {
      "type": "array",
      "items": {
        "type": "number",
        "minimum": -1000000000000.0,
        "maximum": 1000000000000.0
      },
      "minItems": 1,
      "maxItems": 1000
    },
    "sample": {
      "type": "boolean"
    }
  },
  "required": [
    "values",
    "sample"
  ],
  "additionalProperties": false,
  "maxProperties": 1000
}

完整输出 JSON Schema

{
  "type": "number",
  "minimum": -1e+100,
  "maximum": 1e+100
}