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The number of defects in the first five cars to come through

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Manager
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Joined: 23 Mar 2008
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The number of defects in the first five cars to come through [#permalink] New post 17 May 2008, 01:46
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

The number of defects in the first five cars to come through a new production line are 9,7,10,4, and 6 respectively. If the sixth car through the production line has either 3,7, or 12 defects, for which of these values does the mean number of defects per car for the first six cars equal the median?

I. 3
II. 7
III. 12

A) I only
B) II only
C) III only
D) I and III only
E) I,II and III
Intern
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Re: defects [#permalink] New post 17 May 2008, 03:36
Answer is D .

With the choice = 3
median=mean=6.5

With the choice=7
median=7
mean = 7.xxx

With the choice=12
mean=median=8
Re: defects   [#permalink] 17 May 2008, 03:36
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The number of defects in the first five cars to come through

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