[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fsq0TCi3t6vxBtImw0cuMTGJ_YMtNjJ7T5QEOW4CCbKA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-05-07 17:43:01",186158446,[8,9,10,11],"标准差","数值范围","样本数量","方差",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},90,"eaa891effdcae96ad419107f4e6736aa","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25b30343053994e8940089572d36015b.jpg","数据分析与挖掘","exam_155758357","练习题5","数据离散化中,等频分箱的依据是",[21,32,41,50,59,68,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],186158441,[25,26,27,28],"2","3","1","报错","对于 Series 对象 s = pd.Series ([1, 2, 3], index=["a", "b", "c"]),s [1] 的结果是","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],186158442,[36,37,38,39],"pd.join","pd.append","pd.concat","pd.merge","要将两个 DataFrame 按行进行合并,应使用以下哪个函数",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],186158443,[45,46,47,48],"对所有列去重","对 age 列去重","对 color 和 age 列组合去重","对 color 列去重","对于 DataFrame s,s.drop_duplicates (['color', 'age']) 的作用是",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],186158444,[54,55,56,57],"df.sort(by = list(df.columns), axis = 1, ascending = True)","df.sort_values(by = list(df.columns), ascending = True)","df.sort_index(axis = 1, ascending = True)","df.sort(columns = list(df.columns), ascending = True)","已知 DataFrame df,要对其进行按列排序(升序),以下正确的是",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],186158445,[63,64,65,66],"所有重复的值组合","不保留任何重复的值组合","第一个出现的值组合","最后一个出现的值组合","drop_duplicates () 方法默认保留的是",{"answer":69,"createTime":5,"id":6,"options":70,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],186158447,[75,76,77,78],"index_col","names","header","sep","在使用 pd.read_csv 读取 CSV 文件时,若要指定分隔符,应使用以下哪个参数",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],186158448,[84,85,86,87],"预测类别为正,实际类别为负","预测类别为负,实际类别为正","预测类别为负,实际类别为负","预测类别为正,实际类别为正","在分类器评估中,真阳值(TP)是指",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],186158449,[93,94,95,96],"质心","相似度","距离","密度","K-Means 算法采用什么作为相似性的评价指标",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],186158450,[102,103,104,105],"df.set_index(np.arange(len(df)))","df.reset_index(drop = True)","df.index = range(len(df))","df.reindex(index = range(len(df)))","要将 DataFrame df 的索引重置为从 0 开始的整数索引,且删除原索引,应使用以下哪个方法"]