I05-05

Question

https://gmatclub.com/forum/download/file.php?id=81286 GMAT-Club-Forum-v9u3lpkc.png Improved version of this question is discussed HERE .

abhimahna · Answer

Official Solution:   
 
The average migration time of 30 seconds would be greater than the average migration time of 22 seconds for the offline migration. The range of migration times of 80 seconds would be greater than the variance for either of the other two migrations, making this live migration less ideal from a possible variance perspective.

Correct answer:

Average migration time  "No"

Shortest possible migration time  "No"

Variance in migration time  "No"

Prince1890Sharma · Answer

Hello  Bunuel , Can you please explain what is variance, and how can we use range and variance together to answer question choice C?

ARUNEET · Answer

I think this is a  high-quality  question and the explanation isn't clear enough, please elaborate.

dragon717 · Answer

I think this is a  poor-quality  question and the explanation isn't clear enough, please elaborate.

Gabriel9095 · Answer

I think this is a  poor-quality  question and the explanation isn't clear enough, please elaborate.

Apeksha2101 · Answer

Please provide detailed solution

OmerKor · Answer

I did not quite understand the question. Hi,

I agree with the first and second options but have a different perspective on the third.

For the first option: The average time for cloning is 48, and for offline it’s 23. Based on this, for live migration to be considered the best, its average would need to be either lower than 23 or higher than 48, which seems to align with the given reasoning.

For the second option: The shortest time is 21 for offline, while the shortest time for live migration is 24, meaning live migration does not have the shortest time.

However, regarding the third option, I noticed that the variance for live migration is actually the highest:

Live migration ranges from 24 to 114, resulting in a variance of 90.
In comparison, cloning has a variance of 8 and offline has a variance of 13.
Given this, I believe the third option should be YES rather than NO. I’d love to hear any thoughts or clarifications on this!

vivekthesmarty · Answer

Bunuel : In options 1 and 3, question should mention whether higher "Average migration time" & "Variance in migration time" preferable or lower.
please guide if I am missing something.
Regards

Rashmi96 · Answer

I did not quite understand the solution. kindly explain third question

Bunuel · Answer

__________________________
Testing

Bunuel · Answer

Improved version of this question is discussed  HERE .

I05-05

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

Yes	No
		Average migration time
		Shortest possible migration time
		Variance in migration time