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# Set A = {1, 2, 3, 4, 5} Set B = {0, 1, 2, 3, 4, 5} Set C = {-10, -9, -

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Status: GMATINSIGHT Tutor
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Set A = {1, 2, 3, 4, 5} Set B = {0, 1, 2, 3, 4, 5} Set C = {-10, -9, -  [#permalink]

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13 Mar 2020, 21:36
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Difficulty:

55% (hard)

Question Stats:

45% (01:31) correct 55% (01:32) wrong based on 29 sessions

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Set A = {1, 2, 3, 4, 5}
Set B = {0, 1, 2, 3, 4, 5}
Set C = {-10, -9, -8, -7, -6, -5}

If A, B, and C are standard deviations of Set A, Set B, and Set C respectively, then which of the following is the correct order of standard deviation of A, B and C

A) A = B = C
B) C < A < B
C) A < C < B
D) A < B = C
E) B = C < A

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Re: Set A = {1, 2, 3, 4, 5} Set B = {0, 1, 2, 3, 4, 5} Set C = {-10, -9, -  [#permalink]

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14 Mar 2020, 00:05
1
GMATinsight wrote:
Set A = {1, 2, 3, 4, 5}
Set B = {0, 1, 2, 3, 4, 5}
Set C = {-10, -9, -8, -7, -6, -5}

If A, B, and C are standard deviations of Set A, Set B, and Set C respectively, then which of the following is the correct order of standard deviation of A, B and C

A) A = B = C
B) C < A < B
C) A < C < B
D) A < B = C
E) B = C < A

standard deviation of B and C are same. numbers in both sets are equally spaced, at a distance of 1.

Out of the options, only D or E could really be the answers.

between set A and B, B has a number 0 which is further away from mean, this adds more dispersion in set B.
IMO option D.
Re: Set A = {1, 2, 3, 4, 5} Set B = {0, 1, 2, 3, 4, 5} Set C = {-10, -9, -   [#permalink] 14 Mar 2020, 00:05