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September 18th, 2016, 10:53 AM  #1 
Newbie Joined: Sep 2016 From: Chicago Posts: 7 Thanks: 0  Frequency Distribution
I'm stumped! Any help from you brainiacs would be greatly appreciated For the frequency distribution of GPA's of a group of freshmen, and the interquartile range is 1.22. 75% of the freshmen's GPA's fall below (a) 3.25 (b) 3.35 (c) 3.45 (d) can't tell unless the distribution is symmetric 
September 19th, 2016, 01:22 AM  #2 
Senior Member Joined: Dec 2012 From: Hong Kong Posts: 853 Thanks: 311 Math Focus: Stochastic processes, statistical inference, data mining, computational linguistics 
Is this all the information we've got? If not, I think the answer is (d). For all we know, the top 25% could be all geniuses who get 4s (and the bottom 25% would have got 2.78 or below).


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