The sample data below shows the number of hours spent by five students over the weekend to prepare for Monday's Business Statistics exam. 3 12 2 3 5.
The mean and the median of the numbers of hours spent by the five students are _______________.
A) 2 hours and 5 hours,respectively
B) 3 hours and 5 hours,respectively
C) 5 hours and 2 hours,respectively
D) 5 hours and 3 hours,respectively

Question

Quizplus · Accepted Answer

To find the mean, we add up all the hours and divide by 5 (the number of students).

Mean = (3 + 12 + 2 + 3 + 5) / 5 = 25 / 5 = 5 hours

To find the median, we need to first put the hours in order from least to greatest:

2, 3, 3, 5, 12

The middle number is 3, so the median is 3 hours.

Therefore, the answer is D: 5 hours for the mean and 3 hours for the median.

The Sample Data Below Shows the Number of Hours Spent