I got this question too on my GMAC practice exam. The solution to this answer is best explained here: http://www.beatthegmat.com/10-8-10-2-10-7-10-3-is-closest-to-10-t18534.html Basically you factor out 10^2 from Numerator; 10^3 from Denominator so you are left with (10^6)/(10^5) which is equal to 1...

did anyone have a response to this one? i am looking for the solution to this same problem

is there a shorcut to find that the mean=100 without having to add all 10 different numbers and divide by 10? i know if the numbers were evenly spaced, we could just take the middle value but in this case the numbers are not evenly spaced...pls help! thank you

I don't understand Statement 1 - could you explain? Thanks!