Page 446 - Math Smart - 7

b)
b)10 c) 0 d) Black e) Red
Points Tally Frequency
f) Simone will be able to keep track of all the different
colours and the number of them. Therefore, it Is easier 1-3 1 1
for comparison. (Accept any other possible answers) 4-6 1 1
CO
2. a)
7-9 4
1 nil
Number o Tally Frequency 10-12 nil 4
1 nil 4 13-15 nil 4
2 tttt 5 16-18 nil 4
3 M 5 19-21 tttt i 6
4 3
III 22-24 tttt 5
5 tttf 5 25-27 IIII nil 10
ittt tttt
6 Hit III 8 28-30 1 1
Ungrouped because the range of possible v£ c) The frequency table with 6 class intervals is better
small. (Accept any other possible answers) because it has a suitable range for each Interval of
c) 5 rather than a range of 3 for the frequency table
with 10 class intervals. (Accept any other possible
Number Tally Frequency
answers)
2 11 2
3 1 1 Revision (Pg 168)
1.
4 3
III
5 7 Type of music Tally Frequency
tttt II
6 4 Jazz
nil
7 tttt i 6 Classical
8 1 1 (Accept any other possible answers)
9 II 2 2. 3)4
b) 14
10 2
II
c) Delayed at previous delivery
11 1
1 d) 3 e) 3 f) Friday 9)2
12 3. a)a) Open-ended
1 1
d) Ungrouped because the range of possible values is b) Closed
small. (Accept any other possible answers) 4. a) Would you rather have a four-door car or a two-door
e) Grouped because the range of possible values is car? (Accept any other possible answers)
from 5 to 30. (Accept any other possible answers) b) How many times in a week do you eat fish? (Accept
any other possible answers)
3.
5. Suggest a solution to reduce the problem of litter in the
Range of angle Tally Frequency school playground. (Accept any other possible answers)
1 -10 6. Are you going to study after school?
nil 4
Are you going to watch a movie after school?
11 -20 tttt 5
Are you going to play after school?
21-30 tttt 5 Are you going to sleep after school?
tttt III 8 Are you going to watch TV after school?
(Accept any other possible answers)
Total 22
0 7.
Points Tally Frequency Number of qoals Frequency
0 3
1-5 II 2
1 4
6-10 tttt 5
2 6
11 -15 tttt II 7 3 5
16-20 tttt ill 8 4 1
21 -25 tttt tttt III 13 5 1
26-30 tttt 5

B
Answers