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An annually conducted, nationwide survey shows a continuing

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An annually conducted, nationwide survey shows a continuing [#permalink]

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09 Jun 2009, 05:52
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An annually conducted, nationwide survey shows a continuing marked decline in the use of illegal drugs by high school seniors over the last three years.

Q1 Which of the following, if true, casts most doubt on the relevance of the survey results described above for drawing conclusions about illegal drug use in the teen-age population as a whole?

(A) Because of cuts in funding, no survey of illegal drug use by high school seniors will be conducted next year.
(B) The decline uncovered in the survey has occurred despite the decreasing cost of illegal drugs.
(C) Illegal drug use by teen-agers is highest in those areas of the country where teen-agers are least likely to stay in high school for their senior year.
(D) Survey participants are more likely now than
they were three years ago to describe as "heroic" people who were addicted to illegal drugs and have been able to quit.
(E) The proportion of high school seniors who say that they strongly disapprove of illegal drug use has declined over the last three years.

Q2.. Which of the following, if true, would provide most support for concluding from the survey results described above that the use of illegal drugs by people below the age of 20 is declining?

(A) Changes in the level of drug use by high schoolseniors are seldom matched by changes in the level of drug use by other people below the
age of 20.
(B) In the past, high school seniors were consistently the population group most likely to use illegal drugs and most likely to use them heavily.
(C) The percentage of high school seniors who use illegal drugs is consistently very similar to the percentage of all people below the age of 20 who use illegal drugs.
(D) The decline revealed by the surveys is the result of drug education programs specifically targeted at those below the age of 20.
(E) The number of those surveyed who admit to having sold illegal drugs has declined even faster than has the number who have used drugs.
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Re: illegal drugs by high school seniors [#permalink]

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09 Jun 2009, 06:24
tejal777 wrote:
An annually conducted, nationwide survey shows a continuing marked decline in the use of illegal drugs by high school seniors over the last three years.

Q1 Which of the following, if true, casts most doubt on the relevance of the survey results described above for drawing conclusions about illegal drug use in the teen-age population as a whole?

(A) Because of cuts in funding, no survey of illegal drug use by high school seniors will be conducted next year.
(B) The decline uncovered in the survey has occurred despite the decreasing cost of illegal drugs.
(C) Illegal drug use by teen-agers is highest in those areas of the country where teen-agers are least likely to stay in high school for their senior year.
(D) Survey participants are more likely now than
they were three years ago to describe as "heroic" people who were addicted to illegal drugs and have been able to quit.
(E) The proportion of high school seniors who say that they strongly disapprove of illegal drug use has declined over the last three years.

I'll vote for 'E', since the option says that the proportion of high school seniors approving use of illegal drug has actually increased, which is opp. of what argument says.
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Re: illegal drugs by high school seniors [#permalink]

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09 Jun 2009, 06:33
I say C for Q1 and Q2.

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Re: illegal drugs by high school seniors [#permalink]

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09 Jun 2009, 06:34
Q1 - C

Q2 - B

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Re: illegal drugs by high school seniors [#permalink]

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09 Jun 2009, 07:56
pmenon wrote:
I say C for Q1 and Q2.

For Q1, I don't agree to C. The argument is just talking about decline of illegal drugs by high school seniors . Whereas option C is talking about all the teen-agers (though including high school seniors as well).

Btw, whats the OA ?
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Re: illegal drugs by high school seniors [#permalink]

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09 Jun 2009, 08:02
I'm with C & C.

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Re: illegal drugs by high school seniors [#permalink]

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09 Jun 2009, 08:21
I would vote for 'E' too.
Q1We need to find the option which doubts the decline in use of illegal drugs.
(A) Because of cuts in funding, no survey of illegal drug use by high school seniors will be conducted next year. Completely irrelevant.
(B) The decline uncovered in the survey has occurred despite the decreasing cost of illegal drugs. Irrelevant
(C) Illegal drug use by teenagers is highest in those areas of the country where teenagers are least likely to stay in high school for their senior year. It talks about teenagers who do not stay in high school and not about those who are in high school.
(D) Survey participants are more likely now than they were three years ago to describe as "heroic" people who were addicted to illegal drugs and have been able to quit. This statement supports the survey result.
(E) The proportion of high school seniors who say that they strongly disapprove of illegal drug use has declined over the last three years. Here, the no. of high school students who disapprove to drugs have declined, which means that more people, if not support it, don't mind drugs either. This statement then doubts the result of the survey.

I go for 'D'.
Q2.We need to look for statement which supports that use of illegal drug is declining.
(A) Changes in the level of drug use by high school seniors are seldom matched by changes in the level of drug use by other people below the age of 20. Irrelevant.
(B) In the past, high school seniors were consistently the population group most likely to use illegal drugs and most likely to use them heavily. This is opposite.
(C) The percentage of high school seniors who use illegal drugs is consistently very similar to the percentage of all people below the age of 20 who use illegal drugs. Irrelevant.
(D) The decline revealed by the surveys is the result of drug education programs specifically targeted at those below the age of 20. Best support.
(E) The number of those surveyed who admit to having sold illegal drugs has declined even faster than has the number who have used drugs. The no. of people selling illegal drugs might have declined, but those using it might not have.
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Re: illegal drugs by high school seniors [#permalink]

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29 Jun 2011, 05:34
This question stumped me as well but I finally figured out why C is the right answer.

An annually conducted, nationwide survey shows a continuing marked decline in the use of illegal drugs by high school seniors over the last three years.

Which of the following, if true, would provide most support for concluding from the survey results described above that the use of illegal drugs by people below the age of 20 is declining?

(C) The percentage of high school seniors who use illegal drugs is consistently very similar to the percentage of all people below the age of 20 who use illegal drugs.

Basically what this answer choice says that if 20% of High school seniors were taking drugs in 2009 then may be 22% of the teenagers under 20 (in the whole region/country) were taking drugs. Now when the percentage of high school seniors taking drugs declined from 20% to 14% in 2010, the percentage of teenagers, under 20 yrs of age, taking drugs declined to 16%. ANd so on and so forth. What does this mean?? This means that a large portion of the teenagers, under the age of 20 yrs (in the entire region/country), is composed of the very same high school kids who have been surveyed and who have shown a decreasing trend in taking drugs. PHEW!!!

(D) The decline revealed by the surveys is the result of drug education programs specifically targeted at those below the age of 20.
Basically what this says that some of the high school students who are responsible for the decline may have attended a seminar that was targeted at kids under 20. No problem with this- the only problem is when you start assuming that this group that attended the seminar is the only group that forms the entire section of teenagers under 20 in the country. And since you can't prove this- you can't support what the question is asking- the question stem asks us to somehow establish that the survey results are applicable to the teenagers under 20 in general.

Hope this helps!

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Re: illegal drugs by high school seniors [#permalink]

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29 Jun 2011, 08:35
Q1 : C

Conclusion is regarding the teenage population as a whole and not the high school scenarios only.

Q2: C

B would be correct if the phrase "in the past" is not there in the choice.

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Re: illegal drugs by high school seniors [#permalink]

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29 Jun 2011, 11:02
1.C
The survey of drug use in high school is used to represent the drug use among teenagers in general. However, since the heavy users are least likely to stay in school, the survey does not give an accurate representation of drug use among teens.

2.C
Same explanation as Dennis
Choice D is very attractive, but somehow, I do not feel that the link between the premise ,the stem and answer choice D is strong enough.

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Re: illegal drugs by high school seniors [#permalink]

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29 Jun 2011, 11:58
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Sure. This one seams complicated but is pretty clear cut. First, before you even get to the answers, look at what you have.

1. The primary statement claiming that drug use by high school seniors has been declining.

2. A question asking which fact (A-E) would "provide most support for concluding from the survey results" that the secondary statement is true. I would rephrase this as "which fact will provide the link between the first statement and the second statement.

3. The secondary statement claiming drug use by those under 20 has been declining.

Parts two and three jammed into one sentence though so you have to look carefully to realize they are actually separate parts of the overall problem.

Anyway, we have two statements and basically need to know which fact (A-E) best links them. Again, before we even get to the facts lets analyze the statements. In general, the biggest difference in the statements is going to be where the weakness is and where the link needs to be.

For these two statements, the biggest difference between them is that the first one is reporting on high school seniors and the second is reporting on people under 20. So the weakness is that they are referring to two overlapping, but different, sets of people and therefore we can't use one to draw conclusions from the other. In order to "link" these two statements we are going to need some sort of proof that the behavior of high school seniors and the behavior of those under 20 are related.

NOW, let's finally move on to the answers/facts.

It's pretty easy to see that answer C gives us exactly what we are looking for. A "link" between high school seniors drug use and the drug use of those under 20. Now that we have that link, it is safe to say that the second statement can be concluded from the first statement.

I know this was a long complicated answer so if something doesn't make sense, please let me know.

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Re: illegal drugs by high school seniors [#permalink]

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29 Jun 2011, 22:03
tkyle99 wrote:
Sure. This one seams complicated but is pretty clear cut. First, before you even get to the answers, look at what you have.

1. The primary statement claiming that drug use by high school seniors has been declining.

2. A question asking which fact (A-E) would "provide most support for concluding from the survey results" that the secondary statement is true. I would rephrase this as "which fact will provide the link between the first statement and the second statement.

3. The secondary statement claiming drug use by those under 20 has been declining.

Parts two and three jammed into one sentence though so you have to look carefully to realize they are actually separate parts of the overall problem.

Anyway, we have two statements and basically need to know which fact (A-E) best links them. Again, before we even get to the facts lets analyze the statements. In general, the biggest difference in the statements is going to be where the weakness is and where the link needs to be.

For these two statements, the biggest difference between them is that the first one is reporting on high school seniors and the second is reporting on people under 20. So the weakness is that they are referring to two overlapping, but different, sets of people and therefore we can't use one to draw conclusions from the other. In order to "link" these two statements we are going to need some sort of proof that the behavior of high school seniors and the behavior of those under 20 are related.

NOW, let's finally move on to the answers/facts.

It's pretty easy to see that answer C gives us exactly what we are looking for. A "link" between high school seniors drug use and the drug use of those under 20. Now that we have that link, it is safe to say that the second statement can be concluded from the first statement.

I know this was a long complicated answer so if something doesn't make sense, please let me know.

I THINK THIS IS THE BEST WAY TO APPROACH A PROBLEM. THANK YOU TKYLE.

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Re: illegal drugs by high school seniors [#permalink]

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16 Aug 2011, 09:16
IMO, C and A.
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Re: illegal drugs by high school seniors [#permalink]

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19 Aug 2011, 13:01
metallicafan wrote:
IMO, C and A.

A can't be correct. We want to find an answer that allows to generalize the findings for the entire group of teenagers. A says the group is very heterogeneous. It would be hard to generalize

C, however, does exactly what we want

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Re: illegal drugs by high school seniors   [#permalink] 19 Aug 2011, 13:01
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