It is currently 21 Nov 2017, 01:24

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

V10-15

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
Founder
Founder
User avatar
P
Joined: 04 Dec 2002
Posts: 15866

Kudos [?]: 29087 [0], given: 5264

Location: United States (WA)
GMAT 1: 750 Q49 V42
GMAT ToolKit User CAT Tests
V10-15 [#permalink]

Show Tags

New post 17 Aug 2015, 11:18
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

67% (01:12) correct 33% (01:17) wrong based on 52 sessions

HideShow timer Statistics

Pilates is a physical activity that focuses on strengthening the body’s core. A study was conducted with certain members of a Pilates studio. Researchers selected 100 people and instructed them to do Pilates for 30 minutes each day over the course of a month. The group was selected to include people with similar diets, and all the study participants adhered to the instructions. At the end of the study, it was found that the group lost an average of 2.6 pounds. The researchers concluded that Pilates is an effective weight loss treatment.

Which of the following is an assumption made by the researchers in drawing their conclusion?


A. The group of 100 people followed a low calorie diet
B. Pilates is an activity that burns calories
C. Some of the study participants enjoyed doing Pilates more than others
D. If the group of 100 people did no physical activity at all, they would not have lost weight
E. Some of the study participants would have done 30 minutes of Pilates each day even if they were not part of the study
[Reveal] Spoiler: OA

_________________

Founder of GMAT Club

Just starting out with GMAT? Start here... or use our Daily Study Plan


Co-author of the GMAT Club tests

Kudos [?]: 29087 [0], given: 5264

Expert Post
Founder
Founder
User avatar
P
Joined: 04 Dec 2002
Posts: 15866

Kudos [?]: 29087 [0], given: 5264

Location: United States (WA)
GMAT 1: 750 Q49 V42
GMAT ToolKit User CAT Tests
Re V10-15 [#permalink]

Show Tags

New post 17 Aug 2015, 11:18
Official Solution:


Pilates is a physical activity that focuses on strengthening the body’s core. A study was conducted with certain members of a Pilates studio. Researchers selected 100 people and instructed them to do Pilates for 30 minutes each day over the course of a month. The group was selected to include people with similar diets, and all the study participants adhered to the instructions. At the end of the study, it was found that the group lost an average of 2.6 pounds. The researchers concluded that Pilates is an effective weight loss treatment.

Which of the following is an assumption made by the researchers in drawing their conclusion?


A. The group of 100 people followed a low calorie diet
B. Pilates is an activity that burns calories
C. Some of the study participants enjoyed doing Pilates more than others
D. If the group of 100 people did no physical activity at all, they would not have lost weight
E. Some of the study participants would have done 30 minutes of Pilates each day even if they were not part of the study


(A) If the study participants all had a low calorie diet, this would tend to undermine the researchers’ conclusion because it provides an alternative explanation for the weight loss. Thus, this is not an assumption of the researchers.

(B) This may be true, but it is not an assumption made by the researchers in drawing their conclusion.

(C) This answer choice is irrelevant.

(D) Correct. It is possible that, if the study participants did not physical activity at all, they would still have lost weight. The researchers would have to assume this is not true in order to reach their conclusion that Pilates is an effective weight loss treatment.

(E) This answer choice is irrelevant.


Answer: D
_________________

Founder of GMAT Club

Just starting out with GMAT? Start here... or use our Daily Study Plan


Co-author of the GMAT Club tests

Kudos [?]: 29087 [0], given: 5264

Retired Moderator
User avatar
S
Joined: 18 Sep 2014
Posts: 1201

Kudos [?]: 895 [0], given: 75

Location: India
GMAT ToolKit User Premium Member Reviews Badge
Re: V10-15 [#permalink]

Show Tags

New post 02 Oct 2015, 00:33
Pilates is a physical activity that focuses on strengthening the body’s core.
A study was conducted with certain members of a Pilates studio with selected 100 people and instructed them to do Pilates for 30 minutes each day over the course of a month.
The group was selected to include people with similar diets, and all the study participants adhered to the instructions.
At the end of the study, it was found that the group lost an average of 2.6 pounds. The researchers concluded that Pilates is an effective weight loss treatment.

Which of the following is an assumption made by the researchers in drawing their conclusion?

A. The group of 100 people followed a low calorie diet
(weakens the conclusion)
B. Pilates is an activity that burns calories
(can be true kept it aside)
C. Some of the study participants enjoyed doing Pilates more than others
(Enjoyment is not important here and this option defines some of them.)
D. If the group of 100 people did no physical activity at all, they would not have lost weight
(can be true as well)
E. Some of the study participants would have done 30 minutes of Pilates each day even if they were not part of the study
(People who are not part of study are not of concern here. Even if it is do this statement defines only few.)

I got confused between options B and D.
If we apply negation test for both options
B. Pilates is an activity that burns calories
negated: Pilates is not an activity that burns calories
then Pilates cannot result in loss of an average of 2.6 pounds. The researchers conclusion that Pilates is an effective weight loss treatment falls apart.

same is the case with D as well.
Quote:
(D) Correct. It is possible that, if the study participants did not physical activity at all, they would still have lost weight. The researchers would have to assume this is not true in order to reach their conclusion that Pilates is an effective weight loss treatment.


Can someone explain why B is wrong :?:
_________________

The only time you can lose is when you give up. Try hard and you will suceed.
Thanks = Kudos. Kudos are appreciated

http://gmatclub.com/forum/rules-for-posting-in-verbal-gmat-forum-134642.html
When you post a question Pls. Provide its source & TAG your questions
Avoid posting from unreliable sources.


My posts
http://gmatclub.com/forum/beauty-of-coordinate-geometry-213760.html#p1649924
http://gmatclub.com/forum/calling-all-march-april-gmat-takers-who-want-to-cross-213154.html
http://gmatclub.com/forum/possessive-pronouns-200496.html
http://gmatclub.com/forum/double-negatives-206717.html
http://gmatclub.com/forum/the-greatest-integer-function-223595.html#p1721773
https://gmatclub.com/forum/improve-reading-habit-233410.html#p1802265

Kudos [?]: 895 [0], given: 75

Expert Post
Math Expert
User avatar
P
Joined: 02 Aug 2009
Posts: 5214

Kudos [?]: 5861 [0], given: 117

Re: V10-15 [#permalink]

Show Tags

New post 02 Oct 2015, 00:44
Mechmeera wrote:
Pilates is a physical activity that focuses on strengthening the body’s core.
A study was conducted with certain members of a Pilates studio with selected 100 people and instructed them to do Pilates for 30 minutes each day over the course of a month.
The group was selected to include people with similar diets, and all the study participants adhered to the instructions.
At the end of the study, it was found that the group lost an average of 2.6 pounds. The researchers concluded that Pilates is an effective weight loss treatment.

Which of the following is an assumption made by the researchers in drawing their conclusion?

A. The group of 100 people followed a low calorie diet
(weakens the conclusion)
B. Pilates is an activity that burns calories
(can be true kept it aside)
C. Some of the study participants enjoyed doing Pilates more than others
(Enjoyment is not important here and this option defines some of them.)
D. If the group of 100 people did no physical activity at all, they would not have lost weight
(can be true as well)
E. Some of the study participants would have done 30 minutes of Pilates each day even if they were not part of the study
(People who are not part of study are not of concern here. Even if it is do this statement defines only few.)

I got confused between options B and D.
If we apply negation test for both options
B. Pilates is an activity that burns calories
negated: Pilates is not an activity that burns calories
then Pilates cannot result in loss of an average of 2.6 pounds. The researchers conclusion that Pilates is an effective weight loss treatment falls apart.

same is the case with D as well.
Quote:
(D) Correct. It is possible that, if the study participants did not physical activity at all, they would still have lost weight. The researchers would have to assume this is not true in order to reach their conclusion that Pilates is an effective weight loss treatment.


Can someone explain why B is wrong :?:


Hi,
why do you take ". Pilates is an activity that burns calories" as an assumption..
It is more like an inference...
this is an inference from the conclusion..
And D is clearly providing you the assumption
_________________

Absolute modulus :http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html

Kudos [?]: 5861 [0], given: 117

Intern
Intern
avatar
B
Joined: 17 Jun 2014
Posts: 30

Kudos [?]: [0], given: 4

Reviews Badge
Re: V10-15 [#permalink]

Show Tags

New post 03 Jan 2017, 22:30
Hi chetan2u,

That is quite a vague explanation I would say. Even I have the same doubt. I went for B. If option B is given as an option to answer this question, It has to be evaluated for the same. There is no question of taking or not taking it as an assumption . You may be right in saying it is more of a inference but negation test works for this as well. Could anybody provide an explanation that would clarify my doubt.

Thanks,
Vaibhav

Kudos [?]: [0], given: 4

Expert Post
Verbal Expert
User avatar
S
Joined: 14 Dec 2013
Posts: 3198

Kudos [?]: 3510 [0], given: 22

Location: Germany
Schools: HHL Leipzig
GMAT 1: 780 Q50 V47
WE: Corporate Finance (Pharmaceuticals and Biotech)
GMAT ToolKit User Premium Member Reviews Badge
V10-15 [#permalink]

Show Tags

New post 04 Jan 2017, 23:03
Vaibhav0607 wrote:
Hi chetan2u,

That is quite a vague explanation I would say. Even I have the same doubt. I went for B. If option B is given as an option to answer this question, It has to be evaluated for the same. There is no question of taking or not taking it as an assumption . You may be right in saying it is more of a inference but negation test works for this as well. Could anybody provide an explanation that would clarify my doubt.

Thanks,
Vaibhav


Consider the following 3 cases:

1. If you consider that burning calories and losing weight are the same thing, then B is nothing but the conclusion reworded. Hence it cannot be the assumption.

2. If you consider that burning calories and weight loss are not the same thing, and burning calories is one of the things that result in weight loss, then option B is irrelevant because in that case burning calories need not be the reason for weight loss; there could be some other mechanism by which Pilates results in weight loss. (An assumption must satisfy "must be true" condition).

3. If you consider that burning calories and weight loss are not the same thing, and burning calories is the only way of losing weight, then option B is an inference. Pilates causes losing weight, and burning calories is the only way to lose weight - hence Pilates MUST burn calories. (this is the explanation that chetan2u has given above).

In any case option B cannot be an assumption.

Please let me know if you still have doubt.

Kudos [?]: 3510 [0], given: 22

Intern
Intern
avatar
B
Joined: 29 Oct 2016
Posts: 11

Kudos [?]: 4 [0], given: 12

GMAT ToolKit User CAT Tests
Re: V10-15 [#permalink]

Show Tags

New post 29 Sep 2017, 21:43
I chose D as I thought it is the best choice among others. However, I still think that it is may be better if we say something like " if people do not lose weight then they did not do physical activity". Because in this case it's like Pilates causes losing weight, so we should assume that not losing weight > not doing Pilates or physical activity, and can not assume that not pilates or physical activity > not losing weight ? ...

Kudos [?]: 4 [0], given: 12

Re: V10-15   [#permalink] 29 Sep 2017, 21:43
Display posts from previous: Sort by

V10-15

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  

Moderators: Bunuel, chetan2u



GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.