GRE-Math-Questions-to-Know-by-Test-Day-2nd-Edition_pag158

Prévia do material em texto

Multiple-Choice Questions with One or More Correct Answers ‹ 149
 492. Josiah has exam grades of 75, 88, 67, 56, and 93 in his biology class and 
exam grades of 75, 78, 83, 83, 81, and 77 in his history class. Which of 
the following statements about Josiah’s exam grades in the two classes is 
correct? Indicate all that apply.
 (A) The grades in the biology class have greater variability.
 (B) The grades in the history class have greater variability.
 (C) The mean in the biology class is higher than the mean in the history 
class.
 (D) The means in the two classes are equal.
 (E) The median in the biology class is less than the median in the history 
class.
 (F) The medians in the two classes are equal.
Variable X
V
ar
ia
bl
e 
Y
V
ar
ia
bl
e 
U
Variable W
 493. Which statement is an appropriate interpretation of the data shown in the 
preceding scatterplots? Indicate all that apply.
 (A) The association between variables X and Y is stronger than the asso-
ciation between variables W and U. 
 (B) The association between variables X and Y is linear.
 (C) The association between variables W and U is quadratic.
 (D) The association between variables X and Y is negative.
 (E) The association between variables X and Y is positive.
 (F) The association between variables W and U is positive.
05_McCune_Ch04.indd 149 2/11/22 5:10 PM