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Every student at Overland High School receives guidance counseling....

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Every student at Overland High School receives guidance counseling....  [#permalink]

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New post 28 Aug 2018, 08:33
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A
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Difficulty:

  35% (medium)

Question Stats:

72% (02:04) correct 28% (02:30) wrong based on 82 sessions

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Every student at Overland High School receives guidance counseling from either Ms. Hanner or Mr. Land. A review of college admissions data for students graduating from Overland during the last five years shows that, on average, Ms. Hanner was the guidance counselor for fifty-five percent of the students who applied to four-year colleges and forty percent of the students who were accepted at four-year colleges. These figures were quite consistent from year to year over the last five years.

Which of the following can be logically inferred about the past five years from the statements above?

A) The total number of students graduating from Overland each year has remained roughly constant.
B) Mr. Land has been assigned the majority of students with poor study skills.
C) The percentage of applicants who are accepted to four-year colleges is higher among students guided by Mr. Land than it is among students guided by Ms. Hanner.
D) The career goals of the students under the guidance of Ms. Hanner and Mr. Land have remained largely unchanged.
E) The overall grade point average of students under Mr. Land's guidance has been higher than the average of students under Ms. Hanner's guidance.

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Re: Every student at Overland High School receives guidance counseling....  [#permalink]

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New post 28 Aug 2018, 08:34
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Official Answer:-

The words "can be logically inferred" indicate that this is an Inference question. To untangle an Inference question stimulus, just read and paraphrase the statements. There is no argument to analyze. Here, every student at the school is counseled by one of two people. One of the two counselors, Ms. Hanner, counseled fifty-five percent of the students who applied to four-year colleges, and forty percent of the students who were accepted at four year colleges.

Inference questions are typically not predictable. Here, however, one might at least note that since there are only two counselors in the school, and the stimulus gives the percentages for one of the counselors, the percentages for the other counselor can be determined. Since Ms. Hanner was the counselor for fifty-five percent of the students who applied to four year colleges, it must be that Mr. Land was the counselor for the other forty-five percent. Since Ms. Hanner was the counselor for forty percent of the students who were accepted at four-year colleges, Mr. Land was the counselor for the other sixty percent.

(A) does not necessarily follow, because the stimulus gives no information about total students at Overland, just proportions within the total graduates.

(B) cannot be inferred. There is no way to properly link applications and acceptance figures to the quality of study skills.

(C) can be inferred from the stimulus, and is correct. Compared to Ms. Hanner, Mr. Land guided fewer of the applicants but more of the accepted students. Therefore, it must be true that a larger percentage of Mr. Land's students who applied to college were accepted. To verify this, suppose there were 200 applicants and 100 of them were accepted. Ms. Hanner would then have guided 55% of the 200 applicants, or 110 students, and 40% of the 100 who were accepted, or 40 students. Mr. Land would have guided just 90 applicants but 60 of those accepted. A larger fraction of Mr. Land's applicants were accepted, so (C) must be true.

(D) cannot be inferred. There is no information about the career goals of students.

(E) may seem tempting, because the acceptance rate for four-year college is higher for Mr. Land's students (overall) than it is for Ms. Hanner's. But the stimulus doesn't indicate why this is so. It could be that the overall grade point average of Mr. Land's students has been higher, but it doesn't have to be.

TAKEAWAY: It's crucial to keep in mind that on Test Day, an Inference is something that must be true from the stimulus.
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Re: Every student at Overland High School receives guidance counseling....  [#permalink]

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New post 28 Aug 2018, 08:43
CAMANISHPARMAR wrote:
Every student at Overland High School receives guidance counseling from either Ms. Hanner or Mr. Land. A review of college admissions data for students graduating from Overland during the last five years shows that, on average, Ms. Hanner was the guidance counselor for fifty-five percent of the students who applied to four-year colleges and forty percent of the students who were accepted at four-year colleges. These figures were quite consistent from year to year over the last five years.

Which of the following can be logically inferred about the past five years from the statements above?

A) The total number of students graduating from Overland each year has remained roughly constant.
B) Mr. Land has been assigned the majority of students with poor study skills.
C) The percentage of applicants who are accepted to four-year colleges is higher among students guided by Mr. Land than it is among students guided by Ms. Hanner.
D) The career goals of the students under the guidance of Ms. Hanner and Mr. Land have remained largely unchanged.
E) The overall grade point average of students under Mr. Land's guidance has been higher than the average of students under Ms. Hanner's guidance.


Every student is either under the counselling of Ms. Hanner or Mr. Land. So for all the percentages given in the text for Ms. Hanner, (100 - x) are of Mr. Land.
Now, Hanner gets more than 50% (55%) of candidates to college & Land gets more than 50% ( 60%) of accepts. Hence we are looking for a higher acceptance rate for students counselled by the later.

Let's see each answer choice -

A) The total number of students graduating from Overland each year has remained roughly constant. Cannot conclude anything about absolute volume based on percentages

B) Mr. Land has been assigned the majority of students with poor study skills.Trap we might consider this given more students are applying to college under Hanner - but on understanding the argument as stated above this is false As Land is getting more accepts.

C) The percentage of applicants who are accepted to four-year colleges is higher among students guided by Mr. Land than it is among students guided by Ms. Hanner. Bingo - exactly what we were looking for.

D) The career goals of the students under the guidance of Ms. Hanner and Mr. Land have remained largely unchanged. Irrelevant

E) The overall grade point average of students under Mr. Land's guidance has been higher than the average of students under Ms. Hanner's guidance. Real life possibility but nothing has been mentioned in the argument for the inference.

Hence Option (C) is our choice.

Regards,
Gladi
GMAT Club Bot
Re: Every student at Overland High School receives guidance counseling.... &nbs [#permalink] 28 Aug 2018, 08:43
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