Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2301:30 AM EDT
-02:30 AM EDT
Struggling with GMAT Verbal as a non-native speaker? Harsh improved his score from 595 to 695 in just 45 days—and scored a 99 %ile in Verbal (V88)! Learn how smart strategy, clarity, and guided prep helped him gain 100 points.
Apr 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Apr 2212:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
Updated on: 24 Jan 2024, 01:26
Originally posted by tickledpink001 on 31 Dec 2023, 02:49.
Last edited by Bunuel on 24 Jan 2024, 01:26, edited 3 times in total.
Last edited by Bunuel on 24 Jan 2024, 01:26, edited 3 times in total.
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
64% (02:05) correct
36%
(02:09)
wrong
based on 965
sessions
History
Date
Time
Result
Not Attempted Yet
Was the median height of the 25 children in a certain class at least 2 percent greater than the average (arithmetic mean) height of the 25 children?
(1) The median height of the 25 children was 2 centimeters greater than their average height.
(2) The sum of the heights of the 25 children was less than 2,550 centimeters
focus.png [ 45.31 KiB | Viewed 13221 times ]
(1) The median height of the 25 children was 2 centimeters greater than their average height.
(2) The sum of the heights of the 25 children was less than 2,550 centimeters
Attachment:
focus.png [ 45.31 KiB | Viewed 13221 times ]
Question exposed a gap?
Take sectional Adaptive Quant, Verbal, or DI tests on GMAT Club and review the detailed score report.
Get started →
31 Dec 2023, 08:02
Kudos
Bookmarks
Was the median height of the 25 children in a certain class at least 2 percent greater than the average (arithmetic mean) height of the 25 children?
Is median height\(\geq \) 102 % of Average height.
(1) The median height of the 25 children was 2 centimeters greater than their average height.
Median height =Average height+2
If Average height is 100cm or less, 2cm will be at least 2% of the average height. Answer is YES
If Average height >100cm, answer is NO.
Insufficient
(2) The sum of the heights of the 25 children was less than 2,550 centimeters
So Average \(\leq \frac{2550}{25}\) or 102cm.
Nothing about Median height.
Insufficient
Combined
If average height is 100 or less, answer is yes.
If Average height is between 100 and 102, answer is No.
insufficient
E
Is median height\(\geq \) 102 % of Average height.
(1) The median height of the 25 children was 2 centimeters greater than their average height.
Median height =Average height+2
If Average height is 100cm or less, 2cm will be at least 2% of the average height. Answer is YES
If Average height >100cm, answer is NO.
Insufficient
(2) The sum of the heights of the 25 children was less than 2,550 centimeters
So Average \(\leq \frac{2550}{25}\) or 102cm.
Nothing about Median height.
Insufficient
Combined
If average height is 100 or less, answer is yes.
If Average height is between 100 and 102, answer is No.
insufficient
E
27 Jun 2024, 01:23
Kudos
Bookmarks
tickledpink001
Given the heights of 25 children, is median of heights at least 2% more than mean of heights?
(1) The median height of the 25 children was 2 centimeters greater than their average height.
Median = Mean + 2 cm
This tells us the absolute difference between the two, not the percentage difference.
e.g.
If mean = 50 cm, then median = 52 cm and it is 4% more than mean.
If mean = 100 cm, then median = 102 cm and it is exactly 2% more than mean.
But if mean = 200 cm, then median = 202 and it is merely 1% extra.
Not sufficient alone.
(2) The sum of the heights of the 25 children was less than 2,550 centimeters
Obviously not sufficient alone.
Using both together,
Sum of heights < 2550 i.e. mean < 102 cm
When mean = 100, median = 102 and this is when median is exactly 2% more than mean.
When mean < 100, median will be more than 2% extra and when mean > 100, median will be less than 2% extra.
Since we are given that mean < 102, it could be less than 100 or more than 100. Hence median could be more than 2% extra or less than 2% extra. Not sufficient.
Answer (E)
