Question

10 points3) The dot plot shows the number of pencils each boy has at his desk inclass. Find the median for the number of pencils.1 2 3 4 5 6Number of Pencils at Desk23

Answer 1

In order to find the median of the number of pencils, first order the information of the dot-plot graph:

1 1 1 2 2 2 2 3 3 5

there are ten data, the median is one half the sum of the two data at the center of the list:

1 1 1 2 2 2 2 3 3 5

(2 + 2)/2 = 4/2 = 2

Hence, the median is 2