Last visit was: 18 Nov 2025, 15:51 It is currently 18 Nov 2025, 15:51
Home
GMAT
Messages
Tests
Schools
Events
Rewards
Chat
My Profile
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
555-605 Level|   Graphs|   Math Related|               
User avatar
csolano
User avatar
Joined: 04 Jun 2019
Last visit: 01 Jul 2019
Posts: 1
Own Kudos:
58
 [58]
Given Kudos: 23
Posts: 1
Kudos: 58
 [58]
At the end of last semester all 33 students (11 from each of 3 section Updated on: 10 Jun 2024, 03:24
Originally posted by csolano on 25 Jun 2019, 09:43.
Last edited by Bunuel on 10 Jun 2024, 03:24, edited 6 times in total.
Updated - Complete topic (30).
9
Kudos
Add Kudos
49
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide Answer
Hide
Show
History
Dropdown 1: 3 Dropdown 2: C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

25% (medium)

Question Stats:

79% (02:17) correct 21% (02:49) wrong based on 1842 sessions

History

Date
Time
Result
Not Attempted Yet


At the end of last semester, all 33 students (11 from each of 3 sections) of a particular course were asked how many hours per week they spent studying for the course. This data was combined with the number of points earned by each student in the course. This information is presented in the graph.

Grades in the course were calculated using a 20-point scale. To compute the grade, the number of points earned in the course was divided by 50 and then rounded up to the next whole number.

Use the drop-down menus to complete each statement so that it is consistent with the information provided.

The median reported time spent studying for all students in the course was hours per week.

Section had the smallest average (arithmetic mean) reported time spent studying per week.

Show Spoiler
ID: 100347

Attachment:
2023-12-16 11_35_44-GMAT Official Practice.png
2023-12-16 11_35_44-GMAT Official Practice.png [ 206.62 KiB | Viewed 15979 times ]
­
Submit Answer
Start the Timer above, select the dropdowns, and click "Submit" to add this question to your Error log.
ShowHide Answer
Official Answer
Dropdown 1: 3 Dropdown 2: C
Most Helpful Reply
User avatar
GMATCoachBen
User avatar
Joined: 21 Mar 2017
Last visit: 18 Nov 2025
Posts: 465
Own Kudos:
2,719
 [24]
Given Kudos: 210
Status:Professional GMAT Trainer
Affiliations: GMAT Coach
Location: United States (WA)
GMAT Focus 1: 775 Q87 V90 DI88 (Online)
GMAT 1: 760 Q50 V44
GMAT 2: 770 Q51 V44
GMAT 3: 770 Q50 V44
GMAT 4: 770 Q50 V45 (Online)
GMAT 5: 780 Q51 V48
Expert
Expert reply
GMAT Focus 1: 775 Q87 V90 DI88 (Online)
GMAT 5: 780 Q51 V48
Posts: 465
Kudos: 2,719
 [24]
At the end of last semester all 33 students (11 from each of 3 section 16 Dec 2023, 13:42
20
Kudos
Add Kudos
4
Bookmarks
Bookmark this Post
Video solution here (2:59):



I highlight 2 major timesavers:

1) Focus on exactly what it's asking. Both parts just ask about "reported time spent studying", so the points and grades don't matter here.

2) For part 2, we can easily eyeball it, instead of doing any calculations.
Attachments

2023-12-16 12_41_30-,__ - OneNote.png
2023-12-16 12_41_30-,__ - OneNote.png [ 744.95 KiB | Viewed 13579 times ]

User avatar
CareerGeek
User avatar
Joined: 20 Jul 2017
Last visit: 17 Nov 2025
Posts: 1,292
Own Kudos:
4,267
 [9]
Given Kudos: 162
Location: India
Concentration: Entrepreneurship, Marketing
GMAT 1: 690 Q51 V30
WE:Education (Education)
GMAT 1: 690 Q51 V30
Posts: 1,292
Kudos: 4,267
 [9]
At the end of last semester all 33 students (11 from each of 3 section 26 Jun 2019, 21:42
7
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
csolano


At the end of last semester, all 33 students (11 from each of 3 sections) of a particular course were asked how many hours per week they spent studying for the course. This data was combined with the number of points earned by each student in the course. This information is presented in the graph. Grades in the course were calculated using a 20-point scale. To compute the grade, the number of points earned in the course was divided by 50 and then rounded up to the next whole number.Use the drop-down menus to complete each statement so that it is consistent with the information provided.

The median reported time spent studying for all students in the course was ___ hours per week.

A)2
B)2.5
C)3
D)3.5

Section ___ had the smallest average (arithmetic mean) reported time spent studying per week.

A)
B)
C)
Show more

The median reported time spent studying for all students in the course was ___ hours per week

Median of 33 values = (33 + 1)/2 = 34/2 = 17th value (Either in ascending or descending order)
In ascending order
No. of students who studies 1 hour = 5 [Cumulative = 5]
No. of students who studies 2 hours = 9 [Cumulative = 14]
No. of students who studies 3 hours = 8 [Cumulative = 22]

Median = 17th term --> 3 hours

Option C


Section ___ had the smallest average (arithmetic mean) reported time spent studying per week

Observation:

We can see Section C has the least number of study hours per week (As highest value of Section C is just 4 and only 1 student out of 11)

Option C
General Discussion
User avatar
CrackverbalGMAT
User avatar
Major Poster
Joined: 03 Oct 2013
Last visit: 16 Nov 2025
Posts: 4,844
Own Kudos:
8,945
 [6]
Given Kudos: 225
Affiliations: CrackVerbal
Location: India
Expert
Expert reply
Posts: 4,844
Kudos: 8,945
 [6]
At the end of last semester all 33 students (11 from each of 3 section 26 Jun 2019, 01:20
6
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Quote:
IR: Graph Interpretation [#permalink] Show Tags New post 25 Jun 2019, 09:43
Bookmark
this post
Image

At the end of last semester, all 33 students (11 from each of 3 sections) of a particular course were asked how many hours per week they spent studying for the course. This data was combined with the number of points earned by each student in the course. This information is presented in the graph. Grades in the course were calculated using a 20-point scale. To compute the grade, the number of points earned in the course was divided by 50 and then rounded up to the next whole number.Use the drop-down menus to complete each statement so that it is consistent with the information provided.

The median reported time spent studying for all students in the course was ___ hours per week.

A)2
B)2.5
C)3
D)3.5

Section ___ had the smallest average (arithmetic mean) reported time spent studying per week.

A)
B)
C)
Show more

The right answers here are C & C.

The first question is asking us about the median number of hours across the 33 students. Since 33 is an odd number, we're simply looking for the student who studied more than 16 others, and less than 16 others, or the 17th student. Given that your average IR question should take you about 2.5 minutes, you can simply count this.
5 students study one hour, 9 study two hours. This means that so long as there are 3 or more students who study three hours, its the median. We don't need to count them all, and we now know it's 3.

For calculating the mean, there is one important statement that should make your process much simpler; each section has the SAME number of people. This means that the total number of hours will be the same as the mean number of hours.
Section C has no students studying 5 hours or more, so this is a good place to start. The total value is 26. From there, the quickest method to solve the questions would be to add up the highest values for the other classes until the value exceeds 26.

- Matoo
User avatar
prashanths
User avatar
Joined: 27 May 2010
Last visit: 19 Jun 2020
Posts: 104
Own Kudos:
271
 [1]
Given Kudos: 22
Posts: 104
Kudos: 271
 [1]
At the end of last semester all 33 students (11 from each of 3 section 02 Jul 2019, 02:47
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Median should be the 17th value, which is 3hrs - option C.

Average for section C would be the least because, sections A and B have a few students who have spent >4hrs while section C doesnt.
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,586
Own Kudos:
1,079
Posts: 38,586
Kudos: 1,079
At the end of last semester all 33 students (11 from each of 3 section 28 Dec 2024, 03:12
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Moderators:
Bunuel
Math Expert
105355 posts
kingbucky
496 posts