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# Statistics topic doubt

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Manager
Joined: 08 Jun 2017
Posts: 56

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16 Aug 2017, 23:12
00:00

Difficulty:

(N/A)

Question Stats:

100% (01:20) correct 0% (00:00) wrong based on 1 sessions

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What is the average (arithmetic mean) of all multiples of 10 from 10 to 400 inclusive?

190
195
200
205
210

WHat i did was since the means gets multiplied when the list gets multiplied by K . I took the list initially as 10 2030 40 and found the mean for that and multiplied by 10 which is K according to Bunuel but that approach is wrong. Can someone please help me?

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Math Expert
Joined: 02 Sep 2009
Posts: 55150

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16 Aug 2017, 23:21
Asac123 wrote:
What is the average (arithmetic mean) of all multiples of 10 from 10 to 400 inclusive?

190
195
200
205
210

WHat i did was since the means gets multiplied when the list gets multiplied by K . I took the list initially as 10 2030 40 and found the mean for that and multiplied by 10 which is K according to Bunuel but that approach is wrong. Can someone please help me?

This question is discussed here: what-is-the-average-arithmetic-mean-of-all-multiples-of-206983.html In case of any questions please continue in that thread. Thank you.

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________
Re: Statistics topic doubt   [#permalink] 16 Aug 2017, 23:21
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