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 2512:30 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.
05 Oct 2017, 07:08
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
51% (00:48) correct
49%
(00:46)
wrong
based on 73
sessions
History
Date
Time
Result
Not Attempted Yet
How many elements are there in Set A?
1) Frequency of each element in the set A is 1
2) Standard Deviation of Set A is NOT Positive
Source: https://www.GMATinsight.com
1) Frequency of each element in the set A is 1
2) Standard Deviation of Set A is NOT Positive
Source: https://www.GMATinsight.com
05 Oct 2017, 07:46
Kudos
Bookmarks
GMATinsight
Statement 1:set can be {1,2,3...} or {1}. in either case frequency is 1 but no of elements are different. Hence insufficient
Statement 2: implies St. Dvi is 0 because standard deviation cannot be negative, it is either positive or 0. Note standard deviation is the square root of variance, hence cannot be negative. so in Set A all elements are equal i.e {1,1,1,1....} or {1}. In either case no of elements are different. hence Insufficient
Combining 1 & 2,it is clear that the set A has only One element. Hence Sufficient
Option C
shuvodip04
Joined: 05 Oct 2017
Last visit: 03 Mar 2022
Posts: 86
Own Kudos:
Given Kudos: 103
Location: India
Concentration: Finance, International Business
Schools: IIMB IIMA ISB'22 (S) IIMA PGPX'22 (I)
GMAT 1: 660 Q48 V33
GMAT 2: 700 Q49 V35 (Online)
GPA: 4
WE:Analyst (Energy)
18 Mar 2019, 00:00
Kudos
Bookmarks
GMATinsight
From statement 1 : the set can be [1,2,5,6,7] or [3,4,5] nothing conclusive.
From statement 2 : Standard deviation =0 since standard deviation cannot be negative. So that means all the element in the set are the same i.e [2,2,2] or [2]. But we cannot infer anything about the number of elements.
Comibining 1 and 2:
Frequency is 1 and the elements are same. Hence number of elements has to 1.
Answer C
