7
Select the correct answer.
.
Twenty students in Class A and 20 students in Class B were asked how many hours they took to prepare for an exam. The data sets represent their
answers.
Class A: (2, 5, 7, 6, 4, 3, 8, 7, 4, 5, 7, 6, 3, 5, 4, 2, 4, 6, 3, 5)
Class B: (3, 7, 6, 4, 3, 2, 4, 5, 6, 7, 2, 2, 2, 3, 4, 5, 2, 2, 5, 6}
Which statement is true for the data sets?
OA
The mean study time of students in Class Ais less than students in Class B.
OB. The mean study time of students in Class B is less than students in Class A
Oc.
OD.
The median study time of students in Class B is greater than students in Class A
The range of study time of students in Class A is less than students in Class B.
O E. The mean and median study time of students in Class A and Class B is equal.
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