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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## The monthly rainfall for the first eight months of 2008. . . tagged by: M7MBA ##### This topic has 1 expert reply and 0 member replies ### Top Member ## The monthly rainfall for the first eight months of 2008. . . The monthly rainfall for the first eight months of 2008 in inches was 2, 4, 4, 5, 7, 9, 10, 11. Which one of the following equals the mean monthly rainfall for the 8 months and the median of the rainfall for the 8 months, respectively? (A) 6.5, 6 (B) 6, 7.5 (C) 7, 8 (D) 8, 9 (E) 8.5, 9.5 The OA is A. This kind of questions is difficult for me. Experts, can you clarify this PS question for me? Thanks. ### GMAT/MBA Expert GMAT Instructor Joined 04 Oct 2017 Posted: 551 messages Followed by: 11 members Upvotes: 180 Top Reply Quote: The monthly rainfall for the first eight months of 2008 in inches was 2, 4, 4, 5, 7, 9, 10, 11. Which one of the following equals the mean monthly rainfall for the 8 months and the median of the rainfall for the 8 months, respectively? (A) 6.5, 6 (B) 6, 7.5 (C) 7, 8 (D) 8, 9 (E) 8.5, 9.5 The OA is A. This kind of questions is difficult for me. Experts, can you clarify this PS question for me? Thanks. Hi M7MBA, Let's take a look at your question. The monthly rainfall for the first eight months of 2008 in inches was 2, 4, 4, 5, 7, 9, 10, 11. $$Mean=\frac{\text{Sum of Quantities}}{\text{Number of Quantities}}$$ $$Mean=\frac{2+4+4+5+7+9+10+11}{8}$$ $$Mean=\frac{52}{8}=6.5$$ The data is already in ascending order, so we can find the median. 2, 4, 4, 5, 7, 9, 10, 11 There are a total of 8 values, therefore, Median is the average of the middle two values 5 and 7. $$Median=\frac{5+7}{2}=\frac{12}{2}=6$$ Therefore, Option A is correct. Hope it helps. I am available if you'd like any followup. _________________ GMAT Prep From The Economist We offer 70+ point score improvement money back guarantee. Our average student improves 98 points. Free 7-Day Test Prep with Economist GMAT Tutor - Receive free access to the top-rated GMAT prep course including a 1-on-1 strategy session, 2 full-length tests, and 5 ask-a-tutor messages. Get started now. • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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