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# The average giraffe is six and a half to seven foot tall at the age of

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The average giraffe is six and a half to seven foot tall at the age of  [#permalink]

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26 Aug 2015, 11:00
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62% (01:23) correct 38% (01:21) wrong based on 306 sessions

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The average giraffe is six and a half to seven foot tall at the age of six months. Therefore, if a six-month-old giraffe is over seven feet tall, it grew by more inches each month than the average giraffe does.

Which of the following indicates a flaw in the reasoning above?

A) The giraffe's weight is not taken into consideration.
B) Overall faster growth and faster growth per month are not the same.
C) Some six-month-old giraffes are almost eight feet tall.
D) Height is only one measure of normal development in giraffes.
E) The average height at six months for giraffes in general is not the same as the average growth rate of a single giraffe.

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Re: The average giraffe is six and a half to seven foot tall at the age of  [#permalink]

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26 Aug 2015, 12:49
@Harley1980-
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Re: The average giraffe is six and a half to seven foot tall at the age of  [#permalink]

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26 Aug 2015, 13:28
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PriyankaKabbina wrote:
@Harley1980-

Hello PriyankaKabbina

The argument says that average 6-month age giraffe has a 6 feet height and if giraffe has 7 feet heet then this giraffe each month grow at some inches faster.
So we have fact about average height
We have giraffe which higher than average

And on the basis of these two facts the argument makes inference about per-month speed of growth of this latter giraffe. This is wrong inference because giraffe can have unstable rate of growth during its life.

A) The giraffe's weight is not taken into consideration.
Incorrect. Weight is out of scope

B) Overall faster growth and faster growth per month are not the same.
Correct. The fact that one object grew faster than another (overall growth) does not mean that this object has a higher pre-month growth rate.

C) Some six-month-old giraffes are almost eight feet tall.
Incorrect. This is not the problem of reasoning of argument

D) Height is only one measure of normal development in giraffes.
Incorrect. Other measures of gireaffe's development are out of scope

E) The average height at six months for giraffes in general is not the same as the average growth rate of a single giraffe.
Incorrect. The argument does not compare these two measures. The argument just make inference that if two objects have a different height at one age then higher object has a higher per-month growth rate.
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Re: The average giraffe is six and a half to seven foot tall at the age of  [#permalink]

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24 Sep 2018, 12:25
VerbalBot wrote:
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.

haha... thanks.. i am still confused that why E can't be answer
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Re: The average giraffe is six and a half to seven foot tall at the age of  [#permalink]

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25 Sep 2018, 08:45
disenapati wrote:
VerbalBot wrote:
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.

haha... thanks.. i am still confused that why E can't be answer

E does not indicate a flaw in the reasoning - E is actually an elementary, definitely true statement which doesn't any new information. We are told that the average height is one thing, and the specific height is another - hence, E) adds no new information. it definitely doesn't point to a mistake in the reasoning, which has to do with a REASON that these two stats are different.
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Re: The average giraffe is six and a half to seven foot tall at the age of   [#permalink] 25 Sep 2018, 08:45
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