E range of the data.
6 The students in class 8B took a test.
The stem-and-leaf diagram shows their scores out of 40.
a What percentage of the students had a score
Key: 18 means 18
8 99
0
6
8
greater than 32?
1
8
2
3
b What fraction of the students had a score less than 25%?
c) Any student scoring less than 40% must re-sit the test.
How many students do not have to re-sit the test?
d What is the mean score?
5 6 8 8 9
0 1 2 3 3 5 6 7 8 8
0 0 0 0
4​