1. Stem & Leaf diagrams
Saturday, 24 November 2018

2. Example
On Friday students took part in a Mathematics quiz with 50 questions to be answered in 90 seconds. The results are shown below. Represent the information in a Stem and leaf diagram.
10, 5, 15, 9, 31, 24, 21, 8, 37, 50
33, 27, 11, 7, 40, 36, 50, 17, 36, 29
Leafs 1 2 3 4 5 1 2 3 4 5 5 9 7 8 5 1 7 7 4 1 9 3 1 6 7 6
Stem
0 0

3. Example
The students in a year 7 class sat a mock English SATS paper marked out of 60 and obtained the results below.
16,
54,
44,
23,
37,
10,
41,
58,
31,
24,
34,
11, 8,
25,
26,
40,
52,
39,
21, 9,
22,
32,
13,
30, 44
a) Represent the data in a stem and leaf diagram.
b) How many students are their in this class?

4. Draw a stem and leaf diagram to represent this information.
Example
The estimated population of thirty randomly selected countries are shown below.
Draw a stem and leaf diagram to represent this information.
Country
Population
to nearest million
  Congo 71
 France 66
 Afghanistan 26
 Germany 82
 Algeria 38
 Ghana 25
 Angola 21
 Guatemala 15
 Argentina 40
 Iran 77
 Australia 23
 Iraq 33
 Burkina Faso 16
 Italy 59
 Cambodia 13
 Ivory Coast 22
 Cameroon 19
 Kazakhstan 17
 Canada 35
 Kenya 39
 Chad 11
 Madagascar
 Chile
 Malawi 14
 Ecuador
 Malaysia 30
 Egypt 84
 Mali
 Ethiopia
 United Kingdom 63