{
  "id": "S168",
  "type": "单选题",
  "type_code": "single",
  "stem": "在使用样本数据估计回归模型[[IMG:14_image1.png]]中，如果SSE=100，样本量n=27，则回归模型误差项ε的方差[[IMG:14_image2.png]]的无偏估计量为（）。",
  "stem_text": "在使用样本数据估计回归模型[y = β₀ + β₁x + ε]中，如果SSE=100，样本量n=27，则回归模型误差项ε的方差[σ²]的无偏估计量为（）。",
  "options": [
    {
      "key": "A",
      "text": "4"
    },
    {
      "key": "B",
      "text": "4.17"
    },
    {
      "key": "C",
      "text": "4.25"
    },
    {
      "key": "D",
      "text": "5"
    }
  ],
  "options_text": [
    {
      "key": "A",
      "text": "4"
    },
    {
      "key": "B",
      "text": "4.17"
    },
    {
      "key": "C",
      "text": "4.25"
    },
    {
      "key": "D",
      "text": "5"
    }
  ],
  "answer_keys": [
    "A"
  ],
  "answer_display": "A",
  "answer_texts": [
    "4"
  ],
  "sources": [
    {
      "edition": "第14届",
      "edition_num": 14,
      "no": 54,
      "uid": "14-054",
      "file": "第14届市调大赛本科组模拟题(9).docx"
    },
    {
      "edition": "第15届",
      "edition_num": 15,
      "no": 55,
      "uid": "15-055",
      "file": "第15届市调大赛本科组模拟题1.docx"
    }
  ],
  "source_display": "第14届 第54题、第15届 第55题",
  "source_count": 2,
  "images": [
    "14_image1.png",
    "14_image2.png",
    "15_image5.png",
    "15_image6.png"
  ],
  "warnings": [],
  "conflict": null,
  "url": "/q/S168.html"
}