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Which of the following statements must be true about the dat
[#permalink]
30 Jul 2018, 09:16

Expert Reply

1

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Question Stats:

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Which of the following statements must be true about the data described by the box-and-whisker plot above?

Indicate all such statements.

A. The median of the whole set is closer to the median of the lower half of the data than it is to the median of the upper half of the data.

B. The data is normally distributed.

C. The set has a standard deviation greater than zero.

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Re: Which of the following statements must be true about the dat
[#permalink]
11 Aug 2018, 14:22

1

We're looking for what MUST be true:

A: The median on a box plot is the line inside the box. Here, that line falls closer to the right than the left, which means that the median is closer to the 75th percentile (median of upper half of data) than the 25th percentile (median of lower half of data).

B: We have no clue what the distribution of the data is, so we can safely say that this mustn't be true. We can also note that the median doesn't fall on the 50th percentile, so this isn't true.

C: The set clearly has some kind of spread, so the SD is greater than 0.

The answer is just C.

A: The median on a box plot is the line inside the box. Here, that line falls closer to the right than the left, which means that the median is closer to the 75th percentile (median of upper half of data) than the 25th percentile (median of lower half of data).

B: We have no clue what the distribution of the data is, so we can safely say that this mustn't be true. We can also note that the median doesn't fall on the 50th percentile, so this isn't true.

C: The set clearly has some kind of spread, so the SD is greater than 0.

The answer is just C.

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Re: Which of the following statements must be true about the dat
[#permalink]
27 May 2020, 05:38

1

I have posted a detailed video on YouTube which talks about all aspects of Box and Whisker Plot.

Hope it helps!

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Hope it helps!

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Ankit

to BrushMyQuant YouTube Channel to get WEEKLY new VIDEOS!!!

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How to Solve :

Equation of a Line || Co-ordinate Geometry || Remainders || LCM and GCD || Inequalities || Absolute Value || Factors and Multiples || Number and Sum of Factors || Similar Triangles || Exponents || Work Rate || Probability: Coin Toss || Probability: Dice Roll || Prime Numbers || Circles || Equilateral Triangle in a Circle || Arithmetic and Geometric Progression || Divisibility Rules || Statistics || Functions and Custom Characters || Stem & Leaf Plot || Box And Whisker Plot

GRE Club Topic Wise Problems

GRE Quant - 2019 Ed

GRE Verbal - 2019 Ed

The Princeton Review Quantitative Directory

The 5 lb. Book of GRE Practice Problems (2nd Ed.) - QUANT

GRE - PowerPrep® The FREE Practice Tests Explained 2019

Re: Which of the following statements must be true about the dat
[#permalink]
11 Jul 2020, 06:31

First time witnessing such question. Do we really get these type of questions in gre?

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Ever Tried? Ever Failed? No Matter. Try Again. Fail Again. Fail Better!!

Re: Which of the following statements must be true about the dat
[#permalink]
11 Jul 2020, 09:39

Expert Reply

Yes.

See GRE Math Review pag 144

https://gre.myprepclub.com/forum/ets-gre-m ... tml#p38263

_________________

See GRE Math Review pag 144

https://gre.myprepclub.com/forum/ets-gre-m ... tml#p38263

_________________

Which of the following statements must be true about the dat
[#permalink]
20 Sep 2021, 10:04

Romang67 wrote:

We're looking for what MUST be true:

A: The median on a box plot is the line inside the box. Here, that line falls closer to the right than the left, which means that the median is closer to the 75th percentile (median of upper half of data) than the 25th percentile (median of lower half of data).

B: We have no clue what the distribution of the data is, so we can safely say that this mustn't be true. We can also note that the median doesn't fall on the 50th percentile, so this isn't true.

C: The set clearly has some kind of spread, so the SD is greater than 0.

The answer is just C.

A: The median on a box plot is the line inside the box. Here, that line falls closer to the right than the left, which means that the median is closer to the 75th percentile (median of upper half of data) than the 25th percentile (median of lower half of data).

B: We have no clue what the distribution of the data is, so we can safely say that this mustn't be true. We can also note that the median doesn't fall on the 50th percentile, so this isn't true.

C: The set clearly has some kind of spread, so the SD is greater than 0.

The answer is just C.

Can the SD ever be negative?

Also, how are you stating that the median doesn't fall on the 50th percentile?

Thanks

gmatclubot

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