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# Quant Question of the Day Chat

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Re: Quant Question of the Day Chat [#permalink]
Time and again it has been shown that students who attend colleges with low
faculty/student ratios get the most well-rounded education. As a result, when my
children are ready to attend college, I’ll be sure they attend a school with a very
small student population.
Which of the following, if true, identifies the greatest flaw in the reasoning
above?
A. A low faculty/student ratio is the effect of a well-rounded education, not
its source.
B. Intelligence should be considered the result of childhood environment,
C. A very small student population does not by itself, ensure a low
faculty/student ratio.
D. Parental desires and preferences rarely determine a child’s choice of a
college or university.
Students must take advantage of the low faculty/student ratio by
intentionally choosing small classes.
Intern
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Re: Quant Question of the Day Chat [#permalink]
I don’t know if this is a quant questions… In any case, the answer is C. Even if the student population is small, there could be even relatively fewer teachers, so the ratio may still be very low.
Manager
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Re: Quant Question of the Day Chat [#permalink]
Anyone can solve it? Plz explain
Intern
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Re: Quant Question of the Day Chat [#permalink]
Hi.

Do you know what the median is?

(I know what it is. I’m just want you to figure it out.)

You need to know how to figure out what a median is. If you’re given a data set, how do you figure out the median?

Do you get all the middle numbers and add them up? Or is there another way to do it?
Manager
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Re: Quant Question of the Day Chat [#permalink]
I didn’t understand
Intern
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Re: Quant Question of the Day Chat [#permalink]
I don’t just want to give you the answer. I want to help you solve it.

How do you determine the median of a data set? If I give you 20 numbers like 2, 2, 5, 2, 3, 9, and 12. What is the median?

That wasn’t 20 numbers, but you get the idea. How do you figure out the median?

Do you add them all up and divide by 2? If not, what do you do?
Manager
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Re: Quant Question of the Day Chat [#permalink]
Make a consecutive serial then the choose the middle one

I know the ans but i am not getting the method
Intern
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Re: Quant Question of the Day Chat [#permalink]
So, you need to put all the numbers in order, and pick the middle, correct?
Manager
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Re: Quant Question of the Day Chat [#permalink]
Yes

in the question there is a line the number of values in A is 2 times the values in B
Intern
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Re: Quant Question of the Day Chat [#permalink]
Now, going back to the original chart, what do the relative frequencies mean? For the bar that goes from 0-10, what does it indicate?
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Re: Quant Question of the Day Chat [#permalink]
I stuck in this line

For A it represents 45% of data and for B 5% of data
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Re: Quant Question of the Day Chat [#permalink]
Oh. It means that all the values in the first bar in chart A…say that it contains 2, 4, 5, and 8. In B, it would only have 2 numbers rather than 4.

"the number of values in A is 2 times the values in B" It doesn’t mean that the values themselves are twice as big. It means that the number (or amount) of the data points are twice as big.

There are double the number of data points within each bar in Chart A.

So…how do you convert relative frequency to actual frequency?
Manager
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Re: Quant Question of the Day Chat [#permalink]
Multiply with any number between 0 to 10 i gurss

guess

I am bit confused in these math hlp me
Intern
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Re: Quant Question of the Day Chat [#permalink]
This question really tests if you understand what a median is. I know it’s confusing. I’m actually having you do this yourself so you really learn how to do it yourself on the test.

On the GMAT, it’s important that you use simple numbers and convert if you can. Instead of relative frequency, say that the entire population for chart B is 100. So how many data points are there in the bar from 1 - 10?
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Re: Quant Question of the Day Chat [#permalink]
(As long as all the relationships are proportional, you can just convert fractions and percentages to actual numbers.) In chart B, the realtive fequency is 5%, so say that there are 5 data points contained in that bar chart.

Yep! EXCEPT, for A, it’s not 45.
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Re: Quant Question of the Day Chat [#permalink]
Wait why not 45 for A
Intern
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Re: Quant Question of the Day Chat [#permalink]
It says that if you count ALL the data points in chart A, there will be twice as many.

Say that B has 100 data points, how many will there by in A?
Re: Quant Question of the Day Chat [#permalink]
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