Mathsercise-C
HD Special
Revision Mixture
Ready?
Here we go!
Shahid listed the number of goals
scored by each team in his local hockey
league in order
Question
2
7, 12, 13, 18, 19, 24, 31, 34, 39, 42, 56
Find (i) The lower quartile
(ii) The upper quartile
HD Mixture
Answer
1
Here are the times, in minutes,
taken to complete maths homework
4 27,
7 31,
1 37,
7 11,
8
2 25,
5 19,
9 24,
1 28,
12,
0 11,
8 10,
1 27,
2
9 16
6
29,
29,
9 35,
5 38,
7 32,
Question
3
Draw a stem and leaf diagram to show this
1
The
The
leaves
stems
come
come
from
from the
the
units
tens
digits
digits
2
3
HD Mixture
Answer
2
100 students took a test, the graph shows
information about their marks
Question
(i) Estimate the
lowest and
highest marks
No. of students
100
90
4
80
(ii) Estimate the
median score
70
60
50
40
30
(iii) Find the
interquartile range
20
10
10 20
15
Answer
30
455057606570
40
Marks
100
80 90
-
= 20
HD Mixture
3
This box plot shows information about the
time taken for 24 girls at the swimming
club to swim 800m in training
Start
7
8
9
10
11
12
13
14
15
16 17
18
19
20
21
22
23
24 25
Mins
Describe the times of the swimmers with
reference to median, slowest, fastest, and
interquartile range
Answer
Fastest = 23 mins, slowest = 8.5 mins
Median = 18 mins, range = 15.5 mins
Mixture
Interquartile range = 20 – 12.5 = 7.5 HD
mins
4