wwzxbufangqi 发表于 2016-2-13 14:44:28

求问一道题。

For the 55-64 age-group in 1998, the average (arithmetic mean) number of work- hours lost per occupational injury was 48.5. If a workweek is 40 work-hours, which of the following is closets to the total number of workweeks lost due to occupational injuries in the 55-64 age-group in 1998?
A. 4,500  B. 5,200  C. 5,500  D. 5,900  E. 6,300

biaika 发表于 2016-2-13 15:06:11

应该是少了个人数条件。

wwzxbufangqi 发表于 2016-2-13 15:22:14

biaika 发表于 2016-2-13 15:06 static/image/common/back.gif
应该是少了个人数条件。

题目肯定没错的

朱猫咪 发表于 2016-2-14 03:11:37

我记得这是个图表题啊

wwzxbufangqi 发表于 2016-2-14 16:06:43

朱猫咪 发表于 2016-2-14 03:11 static/image/common/back.gif
我记得这是个图表题啊

不是诶。题目就是这样。不会做啊

raydoud 发表于 2016-6-30 21:03:09

liketroy 发表于 2018-5-7 17:29:52

有个饼图和柱状图的 不然没法做的

ba1a糖儿 发表于 2019-5-3 16:51:57

是有图表的
55-64之间的 number of injuries(thousand）=5.2

average workk hour lost per injury =48.5， total=5.2*48.5*1000
题目问workweek， 即total/40  
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