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Graphical Interpretation - Average

This topic has 1 expert reply and 3 member replies
mevicks Master | Next Rank: 500 Posts Default Avatar
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Graphical Interpretation - Average

Post Tue Sep 24, 2013 8:27 pm


Twenty-five adults reported the amount of time each spent exercising during a particular week. The results are summarized in the graph as follows: 5 respondents reported exercising for less than 1 hour, 3 respondents reported exercising for at least 1 hour but less than 2, and so on.

The number of respondents who exercised on average less than one-half hour per day during the week is between ___________ , inclusive.

A) 0 and 5
B) 5 and 8
C) 8 and 10
D) 10 and 14
E) 14 and 19

OA: After a few replies. Neutral
The original explanation states that "A respondent who averaged less than one-half hour of exercise per day would have reported less than 3.5 hours of exercise for the week".
Shouldn't this be 10.5 hours for the week?

(Total Hours Spent Exercising in a Week)/(7 Days) = 1.5 Hours per day
Thus Total hours = 1.5 * 7 = 10.5

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Whitney Garner GMAT Instructor
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Post Wed Sep 25, 2013 4:06 am
[quote="mevicks"]The original explanation states that "A respondent who averaged less than one-half hour of exercise per day would have reported less than 3.5 hours of exercise for the week".
Shouldn't this be 10.5 hours for the week?

(Total Hours Spent Exercising in a Week)/(7 Days) = 1.5 Hours per day

Be careful, "one-half hour" and "one and a half hours" (1.5 hours) are not the same thing. If you exercise only ONE, half hour, then that is 1/2 hour or 0.5 hours.

Hope this helps!
Smile
Whit

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mevicks Master | Next Rank: 500 Posts Default Avatar
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Post Wed Sep 25, 2013 4:32 am
Whitney, thanks a ton for pointing that out! All the steps are crystal clear now Cool

Thanks & Regards,
Vivek

mevicks Master | Next Rank: 500 Posts Default Avatar
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Post Wed Sep 25, 2013 4:42 am
Original explanation :


OA: D) 10 and 14

Kashif77 Newbie | Next Rank: 10 Posts Default Avatar
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Post Tue Jan 06, 2015 9:54 pm
This is greatly average post........you shook posting it......thanks a lot.......!!!

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