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# Mug up this to solve 700 level Set & Statistics problem

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Manager
Joined: 11 Sep 2019
Posts: 71
Mug up this to solve 700 level Set & Statistics problem  [#permalink]

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30 Nov 2019, 11:29

I have come up with these observations as shown in the image. Will you please have a glance and confirm, whether I am doing right or wrong
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Math Expert
Joined: 02 Aug 2009
Posts: 8305
Re: Mug up this to solve 700 level Set & Statistics problem  [#permalink]

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01 Dec 2019, 04:33

I have come up with these observations as shown in the image. Will you please have a glance and confirm, whether I am doing right or wrong

Neither have you posted in the correct forum nor are the observations true..
Range -- Range of a set will always be greater than or equal to the range of sub set.
BUT
Median and Mean-- the relation could be anything..
set -{1, 2, 3, 4,5 , 6, 7}--median = 4 and Mean=4
Subset A-{1,2,3}..Median = 2 so <4 and Mean=2, so <4
Subset B-{3, 4, 5}..Median =Mean= 4 so '=4'
Subset C-{1,6,7}..Median = 6 so >4, Mean=14/3, again>4
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Manager
Joined: 11 Sep 2019
Posts: 71
Re: Mug up this to solve 700 level Set & Statistics problem  [#permalink]

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01 Dec 2019, 10:06
chetan2u wrote:

I have come up with these observations as shown in the image. Will you please have a glance and confirm, whether I am doing right or wrong

Neither have you posted in the correct forum nor are the observations true..
Range -- Range of a set will always be greater than or equal to the range of sub set.
BUT
Median and Mean-- the relation could be anything..
set -{1, 2, 3, 4,5 , 6, 7}--median = 4 and Mean=4
Subset A-{1,2,3}..Median = 2 so <4 and Mean=2, so <4
Subset B-{3, 4, 5}..Median =Mean= 4 so '=4'
Subset C-{1,6,7}..Median = 6 so >4, Mean=14/3, again>4

I am facing difficulties in this area, could you suggest any link or source or idea to improve my skills in this area.
Re: Mug up this to solve 700 level Set & Statistics problem   [#permalink] 01 Dec 2019, 10:06
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