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Help needed-question from Gmat Pill

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Joined: 05 Dec 2011
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Help needed-question from Gmat Pill [#permalink]

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New post 20 Jun 2012, 23:11
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I have solved all the questions except the first one . Can anyone explain how to solve the first one ?

Thanks in advance !!

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Senior Manager
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Re: Help needed-question from Gmat Pill [#permalink]

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New post 21 Jun 2012, 08:47
Hi there, if we can prove that the final score was a simple average then we can answer NO to the first part. A quick calculation reveals that the simple average for Susan is (10+20+35)/3 = 21.67 hmm so looks like its some sort of weighted average. Ok, lets sort by Final score and let your eyes roll down the list. For all the trainers you will notice that the final score is skewed towards the Client 1 and 2 data points. At this point I can intuitively say that either Client 1 or 2 data points have a greater weight. So the answer is NO, Client 3 does not have the same weighting than client 2.

Atleast this is how I would approach the problem and choose the answer. What is the OA/OE?

Last edited by macjas on 21 Jun 2012, 21:08, edited 1 time in total.

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Re: Help needed-question from Gmat Pill [#permalink]

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New post 21 Jun 2012, 14:34
I understand your explanation . Thanks a lot for that. But the official answer is yes .

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Re: Help needed-question from Gmat Pill [#permalink]

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New post 21 Jun 2012, 15:22
Point of clarification: The use of the word "weight" really intends to be "weighting" as in saying that the weight loss of two clients have "equal weighting" in terms of the final score calculation.

The wording may be clearer here:

"In calculating the final score for the contest, the weight loss for a fitness trainer's third client (Client 3) had equal weighting as the weight loss on Client 2."

In other words, did the weight loss in client 3 have the same level of input/impact on the final score calculation as did the weight loss for client 2?

Our staff is available to answer your further questoins here: http://www.gmatpill.com/gmat-practice-t ... stion/1144

We are currently fixing the login/create an account process, which should be ready within the next few days.

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Re: Help needed-question from Gmat Pill [#permalink]

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New post 21 Jun 2012, 15:38
But does this clarification change macjas's explanation?
I still think the answer would be 'No'. However, it would be helpful to know the explanation behind 'yes' from the Gmat Pill
Thanks in advance

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Re: Help needed-question from Gmat Pill [#permalink]

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New post 21 Jun 2012, 18:04
hey guys, please update us with an explanation...thanks..

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Re: Help needed-question from Gmat Pill [#permalink]

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New post 26 Jun 2012, 08:22
Try assuming that statement (1) is true. Now test that assumption and see if you can challenge the assumption and make it wrong. If you can make it wrong, then you know the answer is NO. If everything adds up for all the trainers using your assumption that the 2nd column and 3rd column carry equal waiting, then you know the answer is YES.

Think - system of equations. We've also made the video explanation free for guests so you can click "show answer" and see the video explanation.

http://www.gmatpill.com/gmat-practice-t ... stion/1144

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Re: Help needed-question from Gmat Pill [#permalink]

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New post 30 Jun 2012, 22:06
thanks a lot Gmat pill

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Re: Help needed-question from Gmat Pill   [#permalink] 30 Jun 2012, 22:06
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