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For the 500 measurements obtained in experiment X, the aver [#permalink]
07 Dec 2017, 03:03

Expert's post

00:00

Question Stats:

90% (00:40) correct
10% (01:52) wrong based on 10 sessions

For the 500 measurements obtained in experiment X, the average (arithmetic mean) value is 280 and the value k is at the 75 th percentile. For the 500 measurements obtained in experiment Y, the average value is 280 and the value n is at the 75 th percentile.

Quantity A

Quantity B

k

n

A. Quantity A is greater. B. Quantity B is greater. C. The two quantities are equal D. The relationship cannot be determined from the information given.

Re: For the 500 measurements obtained in experiment X, the aver [#permalink]
08 Dec 2017, 03:51

Expert's post

Yes the answer is D.

Please provide your explanation, it will have a double positive: for you to understand and for the other students. It does not matter if is wrong or not. Here we are to help you to imptove.

Re: For the 500 measurements obtained in experiment X, the aver [#permalink]
22 Jan 2018, 23:44

1

This post received KUDOS

I initially chose A but afterwards I made a comparsion with Median (Q2) 75% is Q3 and as median is the middlemost value Q3 is the 3/4 th value As it is not necessary for middlemost value in both the set of experiments to be equal similarly it is not necessary for 3/4th value in both the experiments to be equal as well (d)
_________________

This is my response to the question and may be incorrect. Feel free to rectify any mistakes

Re: For the 500 measurements obtained in experiment X, the aver [#permalink]
23 Jan 2018, 09:14

It will be D. Eventhough it mentions the total number, average and 75%. But still. Average doesnt make you assure of the values to be same. As the value can be diffrent with average same.

greprepclubot

Re: For the 500 measurements obtained in experiment X, the aver
[#permalink]
23 Jan 2018, 09:14