{
  "id": "S056",
  "type": "单选题",
  "type_code": "single",
  "stem": "在方差分析中，对于因素的每一水平，其观测值来自（ ）。",
  "stem_text": "在方差分析中，对于因素的每一水平，其观测值来自（ ）。",
  "options": [
    {
      "key": "A",
      "text": "正态分布的配额抽样样本"
    },
    {
      "key": "B",
      "text": "正态分布的简单随机样本"
    },
    {
      "key": "C",
      "text": "任意分布的配额抽样样本"
    },
    {
      "key": "D",
      "text": "任意分布的简单随机样本"
    }
  ],
  "options_text": [
    {
      "key": "A",
      "text": "正态分布的配额抽样样本"
    },
    {
      "key": "B",
      "text": "正态分布的简单随机样本"
    },
    {
      "key": "C",
      "text": "任意分布的配额抽样样本"
    },
    {
      "key": "D",
      "text": "任意分布的简单随机样本"
    }
  ],
  "answer_keys": [
    "B"
  ],
  "answer_display": "B",
  "answer_texts": [
    "正态分布的简单随机样本"
  ],
  "sources": [
    {
      "edition": "第12届",
      "edition_num": 12,
      "no": 56,
      "uid": "12-056",
      "file": "第12届本科模拟题（10.19）.xlsx"
    }
  ],
  "source_display": "第12届 第56题",
  "source_count": 1,
  "images": [],
  "warnings": [],
  "conflict": null,
  "url": "/q/S056.html"
}