Welcome! Check out our free B-School Guides to learn how you compare with other applicants.
Login or Register
 

Cheever College offers several online courses

This topic has 4 member replies
Bookmark
Previous Topic Next Topic
killer1387 GMAT Destroyer! Default Avatar
Joined
03 Apr 2011
Posted:
583 messages
Followed by:
4 members
Thanked:
52 times
Cheever College offers several online courses Post Wed Mar 21, 2012 10:43 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Cheever College offers several online courses via remote computer connection, in addition to traditional classroom-based courses. A study of student performance at Cheever found that, overall, the average student grade for online courses matched that for classroom-based courses. In this calculation of the average grade, course withdrawals were weighted as equivalent to a course failure, and the rate of withdrawal was much lower for students enrolled in classroom-based courses than for students enrolled in online courses.

    If the statements above are true, which of the following must also be true of Cheever College?

    (A) Among students who did not withdraw, students enrolled in online courses got higher grades, on average, than students enrolled in classroom-based courses.
    (B) The number of students enrolled per course at the start of the school term is much higher, on average, for the online courses than for the classroom-based courses.
    (C) There are no students who take both an online and a classroom-based course in the same school term.
    (D) Among Cheever College students with the best grades, a significant majority take online, rather than classroom-based, courses.
    (E) Courses offered online tend to deal with subject matter that is less challenging than that of classroom-based courses.

    OA-A
    someone pls explain A and D
    I thought A is just opposite
    i.e. if no. of students in online is less than classroom
    then for average to be same average grades for online should be lower than classroom one.

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    sam2304 GMAT Titan
    Joined
    26 Apr 2011
    Posted:
    1239 messages
    Followed by:
    24 members
    Thanked:
    228 times
    Test Date:
    26/06/2012
    Target GMAT Score:
    720
    GMAT Score:
    680
    Post Thu Mar 22, 2012 1:44 am
    If we consider numbers A is the clear winner.

    10 students take online course and 10 again for classroom course.

    Course withdrawal is low for classroom courses, so consider 2 students from Online course withdrew or considered as Failure.

    Lets say all 10 students score 75 in Classroom course, avg = 75 * 10/10

    Then to match the average with Class room course the students should score higher to match the same average as in to get the 750/10. Two withdrawals will result in 0 and the rest 8 should score more than 75 to match the average.

    Students involved in online course score the best grades whereas it is stated the opposite in D.

    Hope this helped.

    _________________
    Getting defeated is just a temporary notion, giving it up is what makes it permanent.
    http://gmatandbeyond.blogspot.in/

    killer1387 GMAT Destroyer! Default Avatar
    Joined
    03 Apr 2011
    Posted:
    583 messages
    Followed by:
    4 members
    Thanked:
    52 times
    Post Thu Mar 22, 2012 2:40 am
    sam2304 wrote:
    If we consider numbers A is the clear winner.

    10 students take online course and 10 again for classroom course.

    Course withdrawal is low for classroom courses, so consider 2 students from Online course withdrew or considered as Failure.

    Lets say all 10 students score 75 in Classroom course, avg = 75 * 10/10

    Then to match the average with Class room course the students should score higher to match the same average as in to get the 750/10. Two withdrawals will result in 0 and the rest 8 should score more than 75 to match the average.

    Students involved in online course score the best grades whereas it is stated the opposite in D.

    Hope this helped.
    i proceeded as

    A/X=B/Y
    A/X is the average grade of online ones
    and B/Y is the average grade of classroom guys

    NOW if X decreases then A has to decrease to make the ratio equal which means opposite of option A.

    WHERE AM I GOING WRONG??

    sam2304 GMAT Titan
    Joined
    26 Apr 2011
    Posted:
    1239 messages
    Followed by:
    24 members
    Thanked:
    228 times
    Test Date:
    26/06/2012
    Target GMAT Score:
    720
    GMAT Score:
    680
    Post Thu Mar 22, 2012 4:30 am
    killer1387 wrote:
    i proceeded as

    A/X=B/Y
    A/X is the average grade of online ones
    and B/Y is the average grade of classroom guys

    NOW if X decreases then A has to decrease to make the ratio equal which means opposite of option A.

    WHERE AM I GOING WRONG??
    -> Here

    NOW if X decreases then A has to decrease to make the ratio equal which means opposite of option A.

    It is said withdrawals are considered as Failures so we don't decrease X i.e the # ppl taking online courses remains same only their marks are reduced to zero or considered as failure. So to match B/Y ratio A increases for the rest of the people.

    _________________
    Getting defeated is just a temporary notion, giving it up is what makes it permanent.
    http://gmatandbeyond.blogspot.in/

    Thanked by: killer1387
    killer1387 GMAT Destroyer! Default Avatar
    Joined
    03 Apr 2011
    Posted:
    583 messages
    Followed by:
    4 members
    Thanked:
    52 times
    Post Thu Mar 22, 2012 5:40 am
    that's something real clever...Smile

    Best Conversation Starters
    1 varun289 38 topics
    2 killerdrummer 22 topics
    3 sana.noor 20 topics
    4 sanaa.rizwan 14 topics
    5 guerrero 14 topics
    See More Top Beat The GMAT Members...

    Most Active Experts
    1 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    		 204 posts
    2 image description GMATGuruNY

    The Princeton Review Teacher

    		 136 posts
    3 image description Jim@StratusPrep

    Stratus Prep

    		 100 posts
    4 image description Anju@Gurome

    Gurome

    		 74 posts
    5 image description Jon@Admissionado

    Admissionado

    		 51 posts
    See More Top Beat The GMAT Experts