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- GCE N(A)-Level Maths
- Representing Data
Critiquing data presentation
- Lesson: 1a2:03
- Lesson: 1b0:46
Critiquing data presentation
It is important to present data accurately. One way to make data easy to understand is to draw them in graphs, such as line graphs, histograms, bar graphs and pictograms. However, if they are not drawn properly, these graphs can be very misleading too. In this section, we will learn
how to critique graphs and the ways to improve them.
Related Concepts: Representing patterns in linear relations, Reading linear relation graphs, Solving linear equations by graphing
Lessons
- 1.Below are the results of a marketing survey done by a travelling company on activities people prefer to do in holidays.
Activity
Number of people
Stay home
35
Travel
45
Read
30
Spend time with friends
50
Total
155
a)If the travelling company claims that travelling is about 2 times more popular than staying home, is the company correct? Explain.b)Describe how the graph can be more accurate.