Page 185 - Mathematics Coursebook

19.1 Interpreting and drawing pictograms, bar charts, bar-line graphs and frequency diagrams

4 The number of runs scored by the batsmen Number of runs Frequency
at a cricket match are shown in the table. 0 –19 4
Copy and complete the frequency diagram to 20 – 39 9
show the information.
40 – 59 6
Number of runs scored at a cricket match 60 – 79 3

Frequency 10
8
6
4
2
0 0–19 20–39 40–59 60–79
Number of runs

5 This is part of Anil’s homework.
Question Use the bar chart to work out how
Has Anil got his homework right? many more shirts were sold on
Explain your answer.
Tuesday than Monday.

Answer 29 − 24 = 5 shirts
y
Number of shirts sold one week
Number of shirts sold 28
32
24
20
16
12

4 8
0 Monday Tuesday Wednesday Thursday Friday x
Day of week

6 The pictogram shows the hair colour of the Black
students in class 7V.
Nine of the students have blonde hair. Brown
How many students are there in class 7V? Blonde
Show your working. Red

184 19 Interpreting and discussing results