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29 Aug 2010, 16:43
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
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Question Stats:
84% (01:02) correct
16%
(00:40)
wrong
based on 77
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Which set(s) has the largest standard deviation?
1. Set 1 consisting of 10 digits
2. Set 2 consisting of 10 first positive consecutive even numbers
3. Set 3 consisting of 10 first primes
set 1
set 2
set 3
sets 1 and 2
none
I did not understand why Set 1 is not the correct answer especially when nothing is known about Set 1. The digits in Set 1 can be even farther than the set consisting 10 forst primes. I think I am missing something?
1. Set 1 consisting of 10 digits
2. Set 2 consisting of 10 first positive consecutive even numbers
3. Set 3 consisting of 10 first primes
set 1
set 2
set 3
sets 1 and 2
none
I did not understand why Set 1 is not the correct answer especially when nothing is known about Set 1. The digits in Set 1 can be even farther than the set consisting 10 forst primes. I think I am missing something?
whiplash2411
Joined: 09 Jun 2010
Last visit: 02 Mar 2015
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29 Aug 2010, 17:09
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I think that when the term "digit" is used, it represents a single digit number, because you don't refer to bigger numbers as "digits".
Thus it might be prudent to conclude that the first set contains 10 single digit numbers. This might help in the reasoning better.
Thus it might be prudent to conclude that the first set contains 10 single digit numbers. This might help in the reasoning better.
29 Aug 2010, 17:24
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seekmba
sd is the DISPRESION of the terms....
the distance between SET 1 and 2 is fixed therefore the dispression is fixed....
but for set 3, the distance between terms vary, therefore more dispression therefore more SD
hope it helps
