Twelve randomly chosen students were asked how many times they had missed class during a certain semester, with this result: 2, 1, 5, 1, 1, 3, 4, 3, 1, 1, 5, 18. For this sample, the median is:
A)2.
B)3.
C)3.5.
D)2.5.

Question

Quizplus · Accepted Answer

To find the median, first, arrange the numbers in ascending order: 1, 1, 1, 1, 1, 2, 3, 3, 4, 5, 5, 18. Since there are 12 numbers, the median is the average of the 6th and 7th numbers: (2 + 3)/2 = 2.5.

Twelve Randomly Chosen Students Were Asked How Many Times They