题目内容

7.7 Which of the following statements is/are true about group bonus schemes ? (i) Group bonus schemes are approprtate when increased output depends on a number of people all making extra effort (ii) With a group bonus scheme, it is easier to award each individual’s performance (iii) Non-production employees can be rewarded as part of a group incentive scheme

A. (i) and (iii) only
B. (i) and (ii) only
C. (ii) and (iii) only
D. (i) only

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7.6 Employee A is a carpenter and normally works 36 hours per week. The standard rate of pay is $3.60 per hour. A premium of 50% of the basic hourly rate is paid for all overtime hours worked. During the last week of October, Employee A worked for 42 hours. The overtime hours worked were for the following reasons: Maching breakdown: 4 hours To complete a special job at the request of a customer 2 hours How much of Employee A’s earnings for the last week of October would have been treated as direct wages ?

A. $140.40
B. $162.00
C. $129.60
D. $151.20

在残差et和时间t的散点图上,如果,et在连续几个时期中,频繁的改变符号,即图形呈锯齿状,那么残差et具有(5)______ ;如果et在连续几个时期中,并非频繁的改变符号,而是几个负的残差et以后跟着几个正的残差et,然后又是几个负的残差et,.......,那么残差et具有(6)______ 。

DW统计量的取值范围是(7)______ 。当该值靠近(8)______ 时,干扰项可能存在正自相关;靠近(9)______ 时,可能存在负自相关;靠近(10)______ 时,可能无自相关。

工具变量应具备的条件:选择的工具变量与(3)______ 不相关;与(4)______ 。

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