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# According to a recent research study, more than 90% percent

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13 Sep 2010, 05:21
i pick E, but i somewhat think that 30% in option E is a bit lower, ie. if the number were 60%, that could be better?
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13 Sep 2010, 05:45
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Definitely (E).

goalsnr wrote:
According to a recent research study, more than 90% percent of graduates of private high schools in a certain county continue their education in college. By contrast, only 65% of graduates of public high schools subsequently pursue college education. Therefore, if parents in the county wish to increase the likelihood that their children will attend college, they should send them to private rather than public schools.

Which of the following statements would most seriously weaken the argument above?

(A) Graduates of private schools typically score higher on standardized tests and other tests of academic achievement. This would strengthen the argument - higher test scores = better chance of going to college.

(B) While private schools are typically very expensive, attendance of public school is free for the residents of the county. Irrelevant.

(C) In comparison with graduates of private schools, a substantially greater proportion of public school graduates receive need-based financial aid for their college education. Irrelevant. Private school costs money, you would expect people who go there to tend to come from well-off families and hence not need as much financial aid. The number of public school students receiving financial aid tells you nothing about their chances of getting in vs. private school students - just that the ones who do get in tend to need more assistance with paying for it.

(D) In comparison with private schools, public schools provide more opportunities for student involvement in sports and other athletic activities, which almost always increase the likelihood of students’ acceptance to colleges. The number of public school graduates attending college is still 65% even with these opportunities, so how much do they actually help? This actually strengthens the argument, since more private school grads are getting into college, even when the public school grads have this advantage.

(E) Since most public schools are located in rural areas of the county populated primarily by farmers, nearly 30% of students from public high schools choose to pursue farming occupations rather than apply to colleges. If that 30% population instead chose to go to college, public school graduates would have a 95% college attendance rate - higher than the private schools. This would significantly weaken the argument if true.
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13 Sep 2010, 07:54
I feel - D

The Issue mentioned is Probability of a KID joining College.

THe topic doesn mention anything about the FEE.

And since "D" strengthens the probability of a kid joining college after passing out from Public School, I feel its D.

"E" which mentions 30% of kids are of Farmers who want to farm after school doesn't increase the chances of kids joining college.
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13 Sep 2010, 08:41
Pretty easy since E is the only Relevant answer
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13 Sep 2010, 11:03
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A, C, and D all STRENGTHEN the argument. B is irrelevant/out of scope.

E is the only example that gives a reason for why the author's causation conclusion is not valid. Author sees Private HS college rate (90+%), Public HS college rate (65%), and thinks attending private HS = college attendance. E points out a separate reason for the discrepancy, making the data merely a correlation, not a causation.
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13 Sep 2010, 11:04
Nice Math done here to reach the answer - E
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13 Sep 2010, 18:32
its E... farming will keep ratio same ie- the ones not going to college in both cases
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13 Sep 2010, 21:36
I answered E in the following manner.
pvt. school will increase likely hood of attending college.
A->Strengthens
B->how attendance and fees are related to college goes too far
C->Aid for college education is not related to likely hood of addmission
D->weakens but not with certainty.
E->weakens definitely as 30 % people pursue farminglet us asssume 100 students.
30% drop out. so left with 70 student and out of 100, 65 go to college.so effective conversion rate is 65/70>90%.

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13 Sep 2010, 22:14
To weaken the conclusion we have to show that the percentage of students who finally make into the the college is higher in the public school instead of in private school.

Let say there are 100 students in both private and public school.
So 90 % students finally make into the college from the private school
Now in public school 30 % of the students are willingly opting out from the college.
So 70 students are trying to get into the college. Out of these students 65 students are finally going to college.
So the success rate is approax 95% which is higher than that of private school.

So E weakens the argument
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14 Sep 2010, 04:58
nice explanation
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14 Sep 2010, 06:46
E!
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15 Sep 2010, 05:08
geturdream wrote:
To weaken the conclusion we have to show that the percentage of students who finally make into the the college is higher in the public school instead of in private school.

Let say there are 100 students in both private and public school.
So 90 % students finally make into the college from the private school
Now in public school 30 % of the students are willingly opting out from the college.
So 70 students are trying to get into the college. Out of these students 65 students are finally going to college.
So the success rate is approax 95% which is higher than that of private school.

So E weakens the argument

Nice explanation. Could you please also explain why D is wrong? Is it that D weakens but not most seriously or it strengthens as said by others?
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15 Sep 2010, 07:33
mbasaikiran wrote:
geturdream wrote:
To weaken the conclusion we have to show that the percentage of students who finally make into the the college is higher in the public school instead of in private school.

Let say there are 100 students in both private and public school.
So 90 % students finally make into the college from the private school
Now in public school 30 % of the students are willingly opting out from the college.
So 70 students are trying to get into the college. Out of these students 65 students are finally going to college.
So the success rate is approax 95% which is higher than that of private school.

So E weakens the argument

Nice explanation. Could you please also explain why D is wrong? Is it that D weakens but not most seriously or it strengthens as said by others?

(D) states that public school kids have an advantage over private school kids due to an increased access to sports - and yet, despite this advantage, less of them still go to college. That strengthens the argument.
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16 Sep 2010, 14:15
Agree with TehJay explanation
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19 Sep 2010, 05:47
geturdream wrote:
To weaken the conclusion we have to show that the percentage of students who finally make into the the college is higher in the public school instead of in private school.

Let say there are 100 students in both private and public school.
So 90 % students finally make into the college from the private school
Now in public school 30 % of the students are willingly opting out from the college.
So 70 students are trying to get into the college. Out of these students 65 students are finally going to college.
So the success rate is approax 95% which is higher than that of private school.

So E weakens the argument

Hi,
I am little confused here, please try to explain me on my below Query.
In the above %age comparison, why you have not considered 30% of students in Public schools opting for the Farming?
Ultimately Parents want to increase the chances of their children to opt for College education and not for ANY other thing. (as far as the scope of the Argument)
so considering 65% of the students in Public schools are opting for the College education (where do the rest of 35 % students go is not to be considered here)
, Likelihood of Public school Students going for College (65%) is less than the that of Private schools (90 %).

So IMO this Option Strengthens the Conclusion rather than Weakening

IMO the answer is still D.
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19 Sep 2010, 17:21
amod243 wrote:
geturdream wrote:
To weaken the conclusion we have to show that the percentage of students who finally make into the the college is higher in the public school instead of in private school.

Let say there are 100 students in both private and public school.
So 90 % students finally make into the college from the private school
Now in public school 30 % of the students are willingly opting out from the college.
So 70 students are trying to get into the college. Out of these students 65 students are finally going to college.
So the success rate is approax 95% which is higher than that of private school.

So E weakens the argument

Hi,
I am little confused here, please try to explain me on my below Query.
In the above %age comparison, why you have not considered 30% of students in Public schools opting for the Farming?
Ultimately Parents want to increase the chances of their children to opt for College education and not for ANY other thing. (as far as the scope of the Argument)
so considering 65% of the students in Public schools are opting for the College education (where do the rest of 35 % students go is not to be considered here)
, Likelihood of Public school Students going for College (65%) is less than the that of Private schools (90 %).

So IMO this Option Strengthens the Conclusion rather than Weakening

IMO the answer is still D.

You don't consider the 30% here because they didn't apply to college - they opted for farming instead of college. So while only 65% of public school graduates got into college, that's actually 65% of the 70% who actually applied, rather than the 100% of all graduates.

For (D), again, it weakens the argument because it states that public school students have an inherent ADVANTAGE over private school students for getting into college, but despite having this advantage, they still get in less frequently. So even this advantage isn't enough to overcome the fact that they go to public school. The private school students get in at a higher rate without even needing the advantage.
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GMAT CAT CR WEAKEN 3 [#permalink]

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15 Aug 2011, 20:28
According to a recent research study, more than 90% percent of graduates of private high schools in a certain county continue their education in college. By contrast, only 65% of graduates of public high schools subsequently pursue college education. Therefore, if parents in the county wish to increase the likelihood that their children will attend college, they should send them to private rather than public schools.

Which of the following statements would most seriously weaken the argument above?

A. Graduates of private schools typically score higher on standardized tests and other tests of academic achievement.

B. While private schools are typically very expensive, attendance of public school is free for the residents of the county.

C. In comparison with graduates of private schools, a substantially greater proportion of public school graduates receive need-based financial aid for their college education.

D. In comparison with private schools, public schools provide more opportunities for student involvement in sports and other athletic activities, which almost always increase the likelihood of students’ acceptance to colleges.

E. Since most public schools are located in rural areas of the county populated primarily by farmers, nearly 30% of students from public high schools choose to pursue farming occupations rather than apply to colleges.
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Re: GMAT CAT CR WEAKEN 3 [#permalink]

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15 Aug 2011, 23:08
IMDO IT'S E.

conclusion:because greater % of Private are getting college education, that means that Private are better than Public.

weaken: what if not? what if there is a different reason for the differences between publc and private college acceptance?what will put the conclusion into Question.

answer E says:the difference is not beacause of the fact that Private> Public , but because the students in rural areas prefer to find work and not go to college. if it's 30% then potentially 95% could attend to college only if they want to but they do not (a greater % even than in Private)

A AND D STRENGHTEN. A -THE RESULTS IN TESTS OF PRIVATE ARE BETTER THAN PUBLIC. SO PRIVATE>PUBLIC. B-IF IN PUBLIC THEY RECIEVE ADVANTAGE IN COLLEGE ACCEPTANCE DUE TO SPORTS, THAN THE FACT THAT THERE IS A LOW % OF COLLEGE STUDENTS STRENGTHENS THE CONCLUSION THAT PRIVATE>PUBLIC (C IS SAME AS D-public get more advantages due to sports/financial aid in college acceptance and
still have low% in college so probably Private> Public).

b compares only financial differences and not proffesional.
hence in my opinion E
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Re: GMAT CAT CR WEAKEN 3 [#permalink]

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16 Aug 2011, 00:05
easy E,
in E clearly shows 65% is not likelihood of getting into college for public high school graduate since a significant portion of public high school students basically do not seek for higher education.
A B C D are out, some of which strengthen the conclusion...

hope I was clear enough.
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15 Sep 2011, 04:37
+ 1 for D.
but i got it wrong.
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Re: CR-public schools   [#permalink] 15 Sep 2011, 04:37

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