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# If the first term in the data set above is 3, what is the third term?

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If the first term in the data set above is 3, what is the third term?  [#permalink]

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24 Feb 2017, 22:25
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Difficulty:

25% (medium)

Question Stats:

68% (00:33) correct 32% (00:44) wrong based on 46 sessions

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{x, y, z}

If the first term in the data set above is 3, what is the third term?

(1) The range of this data set is 0.
(2) The standard deviation of this data set is 0

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Joined: 02 Sep 2009
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Re: If the first term in the data set above is 3, what is the third term?  [#permalink]

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25 Feb 2017, 00:16
1
{x, y, z}

If the first term in the data set above is 3, what is the third term?

(1) The range of this data set is 0.
(2) The standard deviation of this data set is 0

A set, by definition, is a collection of elements without any order. (While, a sequence, by definition, is an ordered list of terms.) So, it makes no sense talking about first term in the set.
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Re: If the first term in the data set above is 3, what is the third term?  [#permalink]

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25 Feb 2017, 08:35
D
Each statement alone s sufficient here
Statement 1
Highest - lowest = range
Means each term is same
Statement 2
Standard deviation is 0
Means all r same
D

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Re: If the first term in the data set above is 3, what is the third term?  [#permalink]

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25 Feb 2017, 11:01
Bunuel wrote:
{x, y, z}

If the first term in the data set above is 3, what is the third term?

(1) The range of this data set is 0.
(2) The standard deviation of this data set is 0

A set, by definition, is a collection of elements without any order. (While, a sequence, by definition, is an ordered list of terms.) So, it makes no sense talking about first term in the set.

Bunuel ,, going by ur statement lets try to solve the problem,,,
stat 1 is not suff,,

stat 2 will be suff becoz,, in a set or sequence, standard deviation will be zero only when all the elements are same

correct me if im rong.. skywalker
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Joined: 02 Sep 2009
Posts: 50009
Re: If the first term in the data set above is 3, what is the third term?  [#permalink]

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26 Feb 2017, 03:16
mohshu wrote:
Bunuel wrote:
{x, y, z}

If the first term in the data set above is 3, what is the third term?

(1) The range of this data set is 0.
(2) The standard deviation of this data set is 0

A set, by definition, is a collection of elements without any order. (While, a sequence, by definition, is an ordered list of terms.) So, it makes no sense talking about first term in the set.

Bunuel ,, going by ur statement lets try to solve the problem,,,
stat 1 is not suff,,

stat 2 will be suff becoz,, in a set or sequence, standard deviation will be zero only when all the elements are same

correct me if im rong.. skywalker

It does not make much sense to talk about the correct answer of a flawed question.

Topic locked.
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Re: If the first term in the data set above is 3, what is the third term? &nbs [#permalink] 26 Feb 2017, 03:16
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