{
  "id": "J020",
  "type": "判断题",
  "type_code": "judge",
  "stem": "若列联表的行数为3，列数为2，则[[IMG:13_image6.png]]检验的自由度为6。",
  "stem_text": "若列联表的行数为3，列数为2，则[χ²]检验的自由度为6。",
  "options": [
    {
      "key": "A",
      "text": "对"
    },
    {
      "key": "B",
      "text": "错"
    }
  ],
  "options_text": [
    {
      "key": "A",
      "text": "对"
    },
    {
      "key": "B",
      "text": "错"
    }
  ],
  "answer_keys": [
    "B"
  ],
  "answer_display": "B",
  "answer_texts": [
    "错"
  ],
  "sources": [
    {
      "edition": "第13届",
      "edition_num": 13,
      "no": 83,
      "uid": "13-083",
      "file": "第13届市调大赛本科组模拟题.docx"
    }
  ],
  "source_display": "第13届 第83题",
  "source_count": 1,
  "images": [
    "13_image6.png"
  ],
  "warnings": [],
  "conflict": null,
  "url": "/q/J020.html"
}