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GRE The diagram above shows normally distributed data for variables P and Q.jpg [ 18.97 KiB | Viewed 271 times ]
The diagram above shows normally distributed data for variables P and Q, where P represents the height of the students in the 7th grade, while Q represents the height of the students in the 10th grade of a public school. Which of the following must be correct?
Indicate all such statements.
(A) Q has a larger standard deviation than P.
(B) P has a larger mean than Q.
(C) Q has a larger median than P.
(D) The percent of students within one standard deviation of the mean in P is less than that in Q.
(E) No student of the 7th grade is taller than any student of the 10th grade.