{
  "id": "M043",
  "type": "多选题",
  "type_code": "multiple",
  "stem": "在一元线性回归模型[[IMG:14_image1.png]]中，属于随机变量的是（）。",
  "stem_text": "在一元线性回归模型[y = β₀ + β₁x + ε]中，属于随机变量的是（）。",
  "options": [
    {
      "key": "A",
      "text": "y"
    },
    {
      "key": "B",
      "text": "[[IMG:14_image4.jpg]]"
    },
    {
      "key": "C",
      "text": "x"
    },
    {
      "key": "D",
      "text": "[[IMG:14_image5.png]]"
    },
    {
      "key": "E",
      "text": "ε"
    }
  ],
  "options_text": [
    {
      "key": "A",
      "text": "y"
    },
    {
      "key": "B",
      "text": "[β₀]"
    },
    {
      "key": "C",
      "text": "x"
    },
    {
      "key": "D",
      "text": "[β₁]"
    },
    {
      "key": "E",
      "text": "ε"
    }
  ],
  "answer_keys": [
    "A",
    "E"
  ],
  "answer_display": "AE",
  "answer_texts": [
    "y",
    "ε"
  ],
  "sources": [
    {
      "edition": "第14届",
      "edition_num": 14,
      "no": 72,
      "uid": "14-072",
      "file": "第14届市调大赛本科组模拟题(9).docx"
    }
  ],
  "source_display": "第14届 第72题",
  "source_count": 1,
  "images": [
    "14_image1.png",
    "14_image4.jpg",
    "14_image5.png"
  ],
  "warnings": [],
  "conflict": null,
  "url": "/q/M043.html"
}