[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fAn1YUxy1RrHBRrpHSeSOYiJMYrtyVUSRMT-kB9Gm3Ko":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":17,"related":18,"source":28,"type":88},[],"2023-06-14 08:23:22",63428466,[8,9],"正确","错误",{"count":11,"courseId":12,"courseImg":13,"courseName":14,"workId":15,"workName":16},20,"ae37231bb472296fd45cb53ceb1e249a","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8f6d1861c2d7225ca42808692d75026e.jpg","python数据分析","work_26601978","第四、五章Numpy综合大作业","当通过布尔数组索引操作数组时,返回的数据是布尔数组中False对应位置的值.( )",[19,30,39,48,57,63,68,73,78,83],{"answer":20,"createTime":5,"id":21,"options":22,"question":27,"source":28,"type":29},[],63428451,[23,24,25,26],"rand","randint","randn","seed","能够产生正态分布的样本值的函数是( )","v1",0,{"answer":31,"createTime":5,"id":32,"options":33,"question":38,"source":28,"type":29},[],63428452,[34,35,36,37],"array","ones_like","eye","reshape","不是NumPy数组创建的函数是( )",{"answer":40,"createTime":5,"id":41,"options":42,"question":47,"source":28,"type":29},[],63428453,[43,44,45,46],"A.arr = np.array([1, 2, 3])","B.arr = np.array([[1, 2, 3], [4, 5, 6]])","C.arr = np.array([[1, 2], [3, 4]])","D.np.ones((3, 3))","下面代码中,创建的是一个3行3列数组的是( )",{"answer":49,"createTime":5,"id":50,"options":51,"question":56,"source":28,"type":29},[],63428454,[52,53,54,55],"[14]","[25]","[14, 25]","[20, 25]","请阅读下面一段程序:arr_2d = np.array([[11, 20, 13],[14, 25, 16],[27, 18, 9]])print(arr_2d[1, :1])执行上述程序后,最终输出的结果为( )",{"answer":58,"createTime":5,"id":59,"options":60,"question":61,"source":28,"type":62},[],63428455,[],"分割数组的函数有____、____、vsplit",2,{"answer":64,"createTime":5,"id":65,"options":66,"question":67,"source":28,"type":62},[],63428456,[],"求数组的标准差函数是 ____,方差函数是____",{"answer":69,"createTime":5,"id":70,"options":71,"question":72,"source":28,"type":62},[],63428457,[],"在NumPy中,可以使用数组对象____执行一些科学计算",{"answer":74,"createTime":5,"id":75,"options":76,"question":77,"source":28,"type":62},[],63428458,[],"如果ndarray.ndim执行的结果为2,则表示创建的是____维数组",{"answer":79,"createTime":5,"id":80,"options":81,"question":82,"source":28,"type":62},[],63428459,[],"NumPy的数据类型是由一个类型名和元素____的数字组成",{"answer":84,"createTime":5,"id":85,"options":86,"question":87,"source":28,"type":62},[],63428460,[],"程序执行结果是 .import numpy as npa = np.arange____.reshape(2,6)c = a.ravel____c[0]=100print(a)",3]