## Thursday, March 31, 2011

### Data Handling (Bar Chart)

BAR CHART
source: Worksheet 16.1 Q1

The bar chart above shows the traffic condition outside SST at 7.05 in a typical morning.
(a) Find the number of heavy vehicles observed at 7.05 am
(b) How many more cars are there as compared to heavy vehicles at 7.05 am?
(c) What is the total number of vehicles on the road at 7.05 am?
(d) Is it possible to present the above information using the following charts? Justify your answers.
(i)   Pie Chart
(ii)  Line Graph

courtesy of Ms Loh KY
edited by Mr Johari

#### 22 comments:

1. (a) 8
(b) 8
(c) 25
(d) (i) Yes
(ii) No

2. (d) (i) because it could still represent the number of vehicles.
(ii) because it could not represent the number of objects at a given time.

3. a) 8
b) 8 more
c) 25
d) i) No. Because the number 25 is not a factor of 360... therefore it cannot be divided

ii) Yes. The line graph is possible because the numbers are whole numbers

4. a) 8 heavy vehicles
b) 8 more cars
c) 25 vehicles
d)(i) yes, it could still represent the amount of each kinds of vehicles
(ii) no, the line graph is not able to show the amount of vehicles at that time.

5. a) 8
b) 8
c) 25
d)(i) yes, the units in the line graph can be transfered into percentage which can be used in the pie chart
(ii) yes, the bar chart is like the bar chart but just inverted.

6. a) 8
b) 8
c) 25
d)(i) Yes, the units in the line graph can be transfered into percentage which can be used in the pie chart
(ii) Yes, just invert the bar graph

7. This comment has been removed by a blog administrator.

8. a) 8
b) There are 8 more cars.
c) There are 25 vehicles in total.
d)
i) Yes it can, but the answers might not be accurate.
ii) No, because line graphs are used to represent data over a period of time.

9. a) 8
b) 8
c) 25
d)
(i) Yes, It can, but it may not be accurate.
(ii) No, a line graph cannot represent ta few kinds of vehicles.

10. a.8
b.8
c.25
d.i. Yes it can as it counts how many or much things there are at a certain time or place thus making it suitable for this information.
d.ii. No, as line graphs are used to represent progression of something over a period of time unlike the information which is only at one point of time.

Md Ada Syafiq

11. (a)8
(b)8
(c)25
(d)
(i)yes. pie chart can hava more that two factors
(ii)no. line graph can only have two factors

12. Find the number of heavy vehicles observed at 7.05 am (8)
How many more cars are there as compared to heavy vehicles at 7.05 am? (8)
(c) What is the total number of vehicles on the road at 7.05 am? (25)
(d) Is it possible to present the above information using the following charts? Justify your answers.
Pie Chart (yes)
it is because it cannot be put into exact degrees and it might be hard to put the info on a pie chart

Line Graph (yes)
it is because the information can be put into exact numbers as it is shown in whole numbers.

13. (a) 8
(b) 8
(c) 25
(d) (i) Yes. The data shown can be placed in a pie chart because all the data can fit into it and it is based on 1 moment of time.
(ii) No. It is not possible because firstly, there is only one moment of time to compare and secondly, all of them cannot fit into one line graph and thirdly, we cannot compare the data in the line graph.

14. a)8
b)8
c)25
d)
i)Yes, Pie chart we can label each portion what is the type of vehicle.
ii)Yes, Line graph is just another version of bar graph, just that it connect all values in lines.

15. yoshiki Kaneko3/31/2011 08:48:00 PM

(a) 8
(b) 8
(c) 25
(d) (i) Yes. Data in the pie chart would be shown at a certain point in time only.
(ii) No. There would be nothing to put in the X axis

16. a) 8 heavy vehicles
b) 8 more cars
c) 25 vehicles
d)(i) yes, we can label the factors in the pie chart.
(ii) no, the line graph cannot compare the data in the graph.

17. [a] 8
[b] 8
[c] 25
[d] [i] yes, We can label more factors and add annotations for the different types of vehicles.
[ii] No the line graph cannot compare data as there is nothing to put in the X axis.

18. a) 8
b) 8
c) 25
d) i) Yes, as a bar graph can only present data in a single period of time.
ii) No, as line graphs are for data over a period of time.

19. a)8
b)8
c)26
d) (i) yes as we can still use the same information and label more factors.
(ii) No The line graph cant be compared in the graph.

20. 1)8
2)8
3)25
4) i) yes
ii) no

21. i) yes as it can still show the same answers.
ii)no as this is a static period of time.

22. (1)8
(2)8
(3)25
(4) (i)Yes as it can only represent the data at one point of time
(ii)no as there is nothing that can be on the x-axis