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24 Jun 2021, 01:30
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E
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The students in two classes of "Underachiever" high school took a test. x, a, and c are, respectively, the standard deviation, median and the mean of the test scores of the students in class X. y, b, and d are, respectively, the standard deviation, median and mean of the test scores of the students in class Y. Is x>y?
(1) a < b
(2) c < d
(1) a < b
(2) c < d
24 Jun 2021, 02:46
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SD depends on distribution of elements wrt Mean
Together statement 1 and 2 cant help us know the distribution to comment on SD of X WRT that of Y
(E) is the answer IMO
Together statement 1 and 2 cant help us know the distribution to comment on SD of X WRT that of Y
(E) is the answer IMO
Bunuel
The students in two classes of "Underachiever" high school took a test. x, a, and c are, respectively, the standard deviation, median and the mean of the test scores of the students in class X. y, b, and d are, respectively, the standard deviation, median and mean of the test scores of the students in class Y. Is x>y?
(1) a < b
(2) c < d
(1) a < b
(2) c < d
24 Jun 2021, 04:48
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Standard deviation measures how spread out things are. The mean and median, in different ways, measure how big things are. They have nothing to do with each other, so the statements here are irrelevant, and the answer is E.
