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Self Practice 12.1c

1. The bar chart shows the average Average Monthly Rainfall of Impian City
monthly rainfall of Impian City 400
from July to December 2015.
Convert the representation to 300
another suitable data representation
and justify the conversion. Average rainfall (mm) 200
100

0
July August September October November December

Month

2. A blood donation campaign organised by the Malaysian Blood Groups of Donors
Red Crescent has received an overwhelming response B
from the public. The pie chart shows the blood groups 20% A
of 25 donors in the first three hours. Convert this 28%
representation to another suitable data representation and O AB
justify the conversion. 36% 16%

How do you interpret data representations? LEARNING
STANDARDS
By interpreting data representations, we can obtain Interpret various data
representations including
information and hence make inferences and predictions.
making inferences
or predictions.
11

The line graph shows the mass of Mass of Waste Produced
waste, in thousand tonnes, produced 3
in a city from 2010 to 2015.
(a) What is the mass of waste 2 CHAPTER
produced in 2010? Mass of waste (thousand tonnes)
(b) What can you say about the 1 12
mass of waste produced in 2011
and 2014? 0
(c) Find the mean mass of the 2010 2011 2012 2013 2014 2015
Year
waste produced over a period of
six years.
(d) State one inference based on the line graph given.
(e) Based on the trend of the line graph, predict the mass of waste produced in 2016.

277
Data Handling

12 TB Math F1.indd 277 11/10/16 12:21 PM