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.
May 2008:00 AM PDT
-08:30 AM PDT
What’s in it for you- Live Profile Evaluation Chat Session with Jenifer Turtschanow, CEO, ARINGO. Come with your details prepared and ARINGO will share insights! Pre-MBA Role/Industry, YOE, Exam Score, C/GPA, ECs Post-MBA Role/ Industry & School List.
May 2012:30 AM EDT
-01:30 AM EDT
Struggling to find the right strategies to score a 99 %ile on GMAT Focus? Riya (GMAT 715) boosted her score by 100-points in just 15 days! Discover how the right mentorship, tailored strategies, and an unwavering mindset can transform your GMAT prep.
May 2101:00 AM EDT
-02:00 AM EDT
Looking for your GMAT motivation to break through the score plateau? Pragati improved her score by massive 160 points with strategic guidance and hard-work! Find out how personalized mentorship and a strong mindset can turn GMAT struggles into success.
May 2310:00 AM PDT
-11:00 AM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Jun 1006:00 AM PDT
-06:15 PM PDT
Register for the GMAT Club Virtual MBA Spotlight Fair – the world’s premier event for serious MBA candidates. This is your chance to hear directly from Admissions Directors at nearly every Top 30 MBA program..
14 Apr 2007, 04:20
Kudos
Bookmarks
Hello everybody here at GMATClub. As you all can see, this is my first post, although I have been browsing the forum for some time already. I would like to start by saying that I think this forum is a wonderful comunity and provides so much help to GMAT strugglers alike.
I have the following to say.
A
In the solution explanation for example question 7 of the probability lesson under GMATClub courses (I can't add a link due to spam prevention) it's stated that the events are not mutually exclusive (correct) but it's also explained that the events are independent. This however is odd as in the explanation of the Event Types and Sets Analogy theory under sub heading Compatible vs. Incompatible (Mutually exclusive) Events it is stated that "Note that mutually exclusive events are independent." This directly contradicts the statement in the solution explanation. I am not very strong on probability theory let alone mathematical concepts and am therefore doubting which statement to believe; I'd put my money on the statement of the theory. Could anyone clarify?
B
As I understand it, the probability theory necessary for GMAT exercises the following is important to know with regard to when to use the NOT Tool, AND Tool, and most specifically which type of OR Tool -- p(A OR B)=p(A)+P(B) vs. p(A OR B)=p(A)+P(B)-P(A AND B) --
There are 4 basic types of events (incompatible, compatible, independent and dependent) of which some are mutually exclusive and some are not mutually exclusive. I suspect an overlap between some of these event types exists and therefore I have the following questions with my suspicion indicated between brackets:
1 mutually exclusive event = independent event (yes, see first issue in this post)
2 not mutually exclusive event = compatible event (yes, derivative of 1)
3 can an event be both compatible and mutually exclusive? (no, derivative of 2)
4 can an event be both compatible and independent (no, derivative of 3)
5 mutually exclusive events consist of incompatible and independent events (yes)
6 compatible events consist of dependent events (yes)
There are a total of 4! (24) combinations to make I guess (combinatorics)
but I am not going to ask all of them, these 6 cover the basics I guess.
I realise that I may be juggling with all the terms and am therefore confusing myself even further, but the reason why I'm juggling is because I figured it would be helpful to map out the event types and their corresponding actions in a sort of flow chart to have a structured way of tackling all probability questions except combination, expectation and distribution probabilities as those have their own structured method.
I have made a similar flow chart for combinatorics questions and I think it works pretty well. If anyone is interested I can post this flow chart.
Thanks your help!
I have the following to say.
A
In the solution explanation for example question 7 of the probability lesson under GMATClub courses (I can't add a link due to spam prevention) it's stated that the events are not mutually exclusive (correct) but it's also explained that the events are independent. This however is odd as in the explanation of the Event Types and Sets Analogy theory under sub heading Compatible vs. Incompatible (Mutually exclusive) Events it is stated that "Note that mutually exclusive events are independent." This directly contradicts the statement in the solution explanation. I am not very strong on probability theory let alone mathematical concepts and am therefore doubting which statement to believe; I'd put my money on the statement of the theory. Could anyone clarify?
B
As I understand it, the probability theory necessary for GMAT exercises the following is important to know with regard to when to use the NOT Tool, AND Tool, and most specifically which type of OR Tool -- p(A OR B)=p(A)+P(B) vs. p(A OR B)=p(A)+P(B)-P(A AND B) --
There are 4 basic types of events (incompatible, compatible, independent and dependent) of which some are mutually exclusive and some are not mutually exclusive. I suspect an overlap between some of these event types exists and therefore I have the following questions with my suspicion indicated between brackets:
1 mutually exclusive event = independent event (yes, see first issue in this post)
2 not mutually exclusive event = compatible event (yes, derivative of 1)
3 can an event be both compatible and mutually exclusive? (no, derivative of 2)
4 can an event be both compatible and independent (no, derivative of 3)
5 mutually exclusive events consist of incompatible and independent events (yes)
6 compatible events consist of dependent events (yes)
There are a total of 4! (24) combinations to make I guess (combinatorics)
but I am not going to ask all of them, these 6 cover the basics I guess.
I realise that I may be juggling with all the terms and am therefore confusing myself even further, but the reason why I'm juggling is because I figured it would be helpful to map out the event types and their corresponding actions in a sort of flow chart to have a structured way of tackling all probability questions except combination, expectation and distribution probabilities as those have their own structured method.
I have made a similar flow chart for combinatorics questions and I think it works pretty well. If anyone is interested I can post this flow chart.
Thanks your help!
devansh_god
14 Apr 2007, 08:35
Kudos
Bookmarks
hey rulle,
pls upload the flowchart here ......
or post it to [email protected]
thanx in advance for the help........
pls upload the flowchart here ......
or post it to [email protected]
thanx in advance for the help........
Moderators:
203 posts
