【简答题】\t根据某种商品在26个城市的销售量(Y)和销售价格(X)的横截面数据,对销售量(Y)关于销售价格(X)进行线性回归。为了检验回归模型的随机误差项是否存在异方差,将26对观测值按销售价格(X)从大到小排序。根据前面13对观测值,对销售量(Y)关于销售价格(X)进行线性回归,回归的残差平方和为RSS 1 =1536.8。根据后面13对观测值,对销售量(Y)关于销售价格(X)进行线性回归,回归的残差平...
【单选题】下列不属于修成正果“果”的范围的是( )
【单选题】The latest year for which figures could be obtained is______.
A.
the year the author wrote the article
C.
any year between 1977 and 1983
【多选题】如果回归模型中的随机误差项存在异方差,则模型参数的普通最小二乘估计量是( )。
【单选题】In developing the budget for the next year, which one of the following approaches would produce the greatest amount of positive motivation and goal congruence? 在编制下一年度的预算过程中,下列哪一个方法会带来最大限度的正面激励和使各部门的目...
A.
Permit the divisional manager to develop the goal for the division that in the manager’s view will generate the greatest amount of profits 允许部门经理设定本部门的目标,在该经理看来此目标会产 生最大的收益
B.
Have senior management develop the overall goals and permit the divisional manager to determine how these goals will be met.由高层次的管理当局设定总体目标,并让部门经理有权决定 怎样去达成这些目标
C.
Have the divisional and senior management jointly develop goals and objectives while constructing the corporation’s overall plan of operation.由部门的和高层次的管理当局共同设定公司 的目标,同时编制公司总体的经营计划
D.
Have the divisional and senior management jointly develop goals and the divisional manager develop the implementation plan.由部门和高层次的管理当局共同设定目标,由部门经理编制执行计 划
【单选题】Which year was designated by the United Nations as the International Illiteracy Year'?
【单选题】下列不属于溶解氧修正的方法是()修正法?