Question

The stem & leaf diagram shows the

number of emails received by Colin
each day.
8016
9 2 3 5 6 7789
10 0 1 2 3 4
11 1 3
12 3 8
Key:
10 3 means 103 emails
Find the median.

Answer 1

To find the median of the data set, we first need to arrange the data in numerical order. We can do this by grouping the digits in the stem & leaf diagram according to the key:

8016

92 35 67

100 124 34

113

123 8

Then we will arrange them in order as: 8016 92 35 67 100 124 34 113 123 8

To find the median we have to identify the middle value of the data set, considering that we have 12 data points. The middle value is the 7th value in the set which is 100, therefore the median is 100.