单项选择题 对某一量进行等精度观测后得到一组观测值,则该量的最或是值(最佳估值)为这组观测值的( )。 A. 最大值 B. 最小值 C. 算术平均值 D. 中间值
单项选择题 If a customer decided to pass up the chance of a cash discount of 1% in return for reducing their average payment period from 70 to 30 days, what would be the implied cost in interest per annum？ A、9.0% B、 9.5% C、 10% D、12%
单项选择题 Securities are _____ for the person who buys them, but are _____ for the individual or firm that issues them.