Tuesday, March 29, 2011

Data Handling (Pie Chart)

PIE CHART
source: Worksheet 16.1 Q2

The Pie Chart below represents the traffic condition outside SST at 7.25 am on a typical morning.
(a) Find the angle of the sector representing motorcycle to the nearest degree.
(b) Find the percentage of sector representing cars, correct your answer to 3 significant figures.
(c) Is it possible to present the above information using line graph? Justify your answer.

courtesy of Ms LohKY
edited by Mr Johari

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3. a) 28º
b) 69.2%
c) No, it is not. A line graph is for representing trends, not for displaying the numbers of certain objects.

4. a)28º
b)69.2%
c)No,it will not be possible to present a clear diagram and an understandable,so it is not possible to present the above information using line graph

5. (a)28deg
(b)69.2%
(c)no it is not. As a line graph can only track the progress of a certain object over a span of time, it is not possible as we are trying to calculate all 5 objects.

6. (a) 30 degrees
(b) 80.129 degrees
(c) No... as line graph is used for time

7. a)18 degree
b)69.2
c) yes becasue they can be represented individually so it is able to

8. (a) 27º
(b) 69.2%
(c) No, as the amount there is not present.

9. (a)27 degrees
(b)69.2%
(c)Yes, It is possible. The numbers can still be represented.

10. a) 28

b) 69.2%

c) no, this is for a certain instant but line graphs are for stuff over time

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12. (a) 13deg
(b) 69.2
(c) no as the result is only interested in result not the increasing or decreasing trend

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14. a)28º
b)69.3%
c)No,because a line graph shows what happens over a period not for showing numbers

15. a) 28º
b) 69.2%
c) No. A line graph is used to represent information over a period of time and this information is given at an instantaneous moment so it is not suitable.

16. a)28º
b)69.2%
c)Yes. As, the numbers can be presented over the lines

17. a)28
b)69.2%
c)No as the line graph is used to show the trend in a amount of time

18. a) 28º
b) 69.2%
c) no, this data presents a few things at a moment, not over a period of time, whereas line graphs present a thing over a period of time.

19. (a)28˚
(b)69.2%
(c)No, as line graphs present the information over a period of time.

20. a)28º
b) 69.2%
c)No it is not able to. Line Graphs are used to represent changes over a period of time not measure how many types of objects there are.

21. a)28˚
b)69.2%
c)No.This happened at the same time while line graph is represents over a period of time.

22. (a) 28º
(b) 69.2%
(c) No. Line Graph is used to present information over a period of time but this data is only recorded at 7.25am.

23. (a) 28º
(b) 69.2%
(c) No I do not think that it is possible as line graphs are supposed to express the data over a period of time, which is not appropriate for his situation.

24. a) 28%
b) 69.2%
c)No.Line graph can only be used to measure the number of vehicles over time .