Question

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?
A.
The mean study time of students in Class A is less than students in Class B.
O
B .
The mean study time of students in Class B is less than students in Class A.
OC.
The median study time of students in Class B is greater than students in Class A.
D.
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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Answer 1

B

Explanation:

If you add up all of class A and divide it by 20 you get 4.8

If you add up all of class B and divide it by 20 you get 4

Meaning class b studied less than class a