大小分级可以分为()和()两种。
参考答案:手工分级;机械分级
频数表不能()。
A.反映频数分布的特征
B.方便进一步统计分析计算
C.便于发现异常值
D.精确估计算术均数的值
E.用于分类资料
Peter _____ a little money every month so that he can buy a car of his own in the near future.[ ]
A. sets aside
B. sets about
C. sets off
D. sets out