GWD9-14

amyding85

 

Q14: 

 

Yesterday each of the 35 members of a certain task force spent some time working on project P.  The graph shows the number of hours and the number of members who spent that number of hours working on project P yesterday.  What was the median number of hours that the members of the task force spent working on project P yesterday?

 

A.     2

B.     3

C.     4

D.     5

E.      6

Answer:E

我得D阿？median number 不是中位数的意思么？

9+4+1+2+1+8+10=35，中为数是17，第17个工人是5小时阿

[attachimg]50248[/attachimg]

biyanyt

9+4+1+2+1+8+10=35，中为数是第18个, 1、2、3、4、5,中位数是3, 不是2