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Statistics (College Intro) Questions:

suppose there are 400 students in yur school class. What class…

Complete Question Text:

suppose there are 400 students in yur school class. What class rank is the 20th percentile?

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Asked on Nov. 1, 2012, 5:56 p.m.
Baur B. Tutors Statistics (College Intro) + 17 others
The University of Chicago Harris School of Public Policy Studies 2014 - Public Policy
"Used to tutor high school students for Math Olympiads, many of my students participated in math contests on international..."

20th percentile means that 20% of the class is below the point. The rank will be (400 - 20%x400) = 320th.

The student's feedback

Xiaoping L. Tutors Statistics (College Intro) + 10 others
Johns Hopkins Univerisity 2014 - Electrical and Computer Engineering
"I have been a tutor in China to teach kids math and signal processing. I get lots of fun through that experience since kids..."

400x20%=80,so the class rank is equal to 80.

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