### Chap 16: Data Handling - Activity 1 Gateway to Singapore Statistics

The Singapore Department of Statistics plays an important role in the growth of Singapore.
It is the central statistical authority responsible for official statistics on the Singapore economy and population.

Do you know...
The
Department of Statistics has begun gathering data for the Census of Population 2010?

• Click HERE to find out how the data will be collected.
• In what way, do you think, the data collected would be useful to the people of Singapore?
Note: This is part of the daily work. All are to attempt.

### Chap 16: Data Handling - Activity 2(a) Interpreting Bar Graphs

Source of Graph: Statistics Singapore. (2010, April 18). Statistics: Population. Retrieved from http://www.singstat.gov.sg/stats/charts/popn-area.html#popnA.

The bar graph shows information pertaining to the Singapore Population.

(a) What do the horizontal and vertical axis of the bar graph represent?
(b) Give an appropriate title to the bar graph.
(c) If this is a 3-mark question, how would you describe the population of Singapore in the past 50 years?

Note: This is part of the daily work. All are to attempt.

### Chap 16: Data Handling Activity - 2(b) Interpreting Bar Graphs

Source of Graph: Singapore Statistics. (2010, April 18). Statistics: Literacy and Education. Retrieved from http://www.singstat.gov.sg/stats/charts/lit-edu.html

The bar graph shows the educational attainment
of residents aged between 25-39 years.

In one sentence or a short paragraph, what does the graph tell us about the educational attainment of residents in the year 1999 and those in the year 2009?

Note: This is part of the daily work. All are to attempt.

### Chap 16: Data Handling Activity 3(a) Interpreting Line Graphs

Source of Graph: Singapore Statistics. (2010, April 18). Statistics: Social Indicators. Retrieved from http://www.singstat.gov.sg/stats/charts/socind.html

The graph shows information about mobile phone subscribers in Singapore.

(a) Give a meaningful title to the line graph.
(b) In one sentence or a short paragraph, what does the graph tell us about the subscription of mobile phone services from the year 1999 to year 2009?

### Chap 16: Data Handling - Activity 3(b) Interpreting Line Graphs

Source of Information: Statistics Singapore. (2010, April 18). Statistics Visualiser. Retrieved from http://www.singstat.gov.sg/stats/stats.html#explorer.

Indonesia, China, Australia, Malaysia and India were Singapore’s top visitor-generating markets in 2009, accounting to more than 50% of total visitor arrivals for the year.

Increased air links and the growth of low cost carriers in the region contributed to the increase in visitor arrivals from countries such as Malaysia in 2009, mitigating the declines in visitor arrivals from other countries due to weak economic sentiments and the impact of Influenza A (H1N1).

Click HERE to view and access the interactive graph (as shown below) that shows the number of visitor arrivals from these 5 countries.
Note:
Make use of the interactive features of the graph (right click at the chart to explore) to draw out trends - for individual countries, as well as make comparisons between countries.

From the graphs,

(a) For each country, describe the variation in the data, starting from 1999 to 2009. Based on the data, would you predict the number of visitors for 2010 is going to be higher or lower than 2009? What makes you think it is higher or lower? [10 marks]
(i) Austrialia: ..... {i.e. your observation...}

(b) Make a comparison amongs the data from each country, the data from which country stands out? Why do you think there are more visitors from this country than others? Would you be able to briefly describe the possible purposes of visit by people from these 5 countries? [6 marks]

(c) What other observations or inferences you could make from the graphs? [Bonus: 4 marks]

Note: This is part of the daily work. All are to attempt.
You may refer to the example in Textbook Chap 16 (p176) to guide you in answering the question.

### Chap 16: Summary of Data Collection and Different Kinds of Graphical Representations

The materials in the BBC Skillwise & GCSE Bitesize websites summarise what we have learnt in Chapter 16 so far:

Data Handling
Graphical Representation
1. Graphs and Charts:
• The 5 Factsheets provides examples and tips on the use the each type of graphs
• Practise and Review your understanding with the worksheets
2. raw money: Graphs: A good summary of how to read and interpret graphs

3. Pie Charts and Frequency Diagrams (Revise, Activity, Review)

4. Try this Game! Bugs in the System

### Chap 16 Data Handling: Histograms - How does it look like?

Here are 3 examples of HISTOGRAMS

Describe the Histogram - How does it look like?

### Chap 16 Data Handling: Histograms - Comparing with Bar Charts

Below are 2 examples of Bar Charts.
Let's compare Histograms and Bar charts...
• What difference do you observe?
• When do you use a bar chart and when would you use a histogram?

### Learning Challenge - Data Consolidation by Toby Gail Lim [06]

Information:

Neighborhood: Bukit Panjang
Bus Stop Number: 44229
Name of Bus Stop: B01 Pending Road
Time: 11.50am-12.30pm

 Bus Services

Based on your observation, what is the profile of the commuters during on a typical Friday, between 11.00 am to 12.30 pm.
They are working adults and senior citizens.

What are the challenges you faced during the data collection period.
As i had to go for CCA, i was unable to collect data.

If you were given a 2nd chance to capture data again, suggest at least ONE way to improve the process.
Again,this is not very applicable to me, but if i were given a chance to capture data again, i would definitely go collate data myself next time.

Information are from: Cheng Shu Yu Mavis (1) S1-01
Thank you VERY much, Mavis! :D

### Learning Challenge - Data Consolidation by Ng Ying Liang

Neighbourhood: Boon Lay
Bus stop name: Boon Lay Bus Interchange Berth 32
Time Started: 11.00am
Time End:12.30pm
Bus services: 241,181,192

Based on your observation, what is the profile of the commuters during on a typical Friday, between 11.00 am to 12.30 pm.

The challenged I met during this challenge is that I did not know to choose what berth as it is a interchange with many bus number and also people walking passed by is looking at us as if we are the center of attention

If you were given a 2nd chance to capture data again, suggest at least ONE way to improve the process.
I would be more mentally prepared

### Chap 16: Data Handling - Graphs (V)

What kind of information is this graphical representation trying to "tell"?

### Chap 16: Summary - Purpose of Different Types of Graphs

Pictogram:
• It is visually appealing
• It is easy to read, especially when each picture represents a frequency of one
• It is hard to represent exact quantity using pictures that are partially drawn
• The pictures must be of consistent size for fair comparison among the categories
• It is best for data which do not have many categories
Bar Graph/ Column Graph:
• It can display data with many categories
• It is easy to identify the category with the highest frequency from a bar graph
• It is convenient and easy to compare two or more sets of data with many categories
• Bar graphs should always start with zero on the frequency axis or it can give false impressions when we make comparison of different bars
Pie Chart:
• It can display a data set with many categories in terms of numbers or percents
• It can display the relative proportions of different categories in a data set
• The 'whole' pie should have a meaningful interpretation, i.e. the different categories of the data should represent parts of a whole
• It is not easy to compare two pie charts
• Due to rounding of quantities, the total may not give 100%
Line Graph:
• It can display patterns and trends over time better than most other graphs
• It can compare the trend of two or more data sets easily
• Intermediate values can be readily estimated from the graph
• Intermediate values can be easily obtained but they may not be meaningful depending on the contet
• The comparison of two line graphs can sometimes lead to misinterpretation when the scales used for the (vertical) axis are different
Source: New Express Mathematics 1 Chapter 13

### Chap 16: Data Handling - Real World Applications

From the Bus Survey Project, we learnt how to gather real world data, make sense out of it by analysing the patterns and (we will) eventually make suggestions/recommendations based on data.

In the following video clip, we will learn how data (in the study of Statistics) has enabled mankind to make big and small decisions, that either impact the individuals or the bigger community.

Look out for the following segments:
• Describing Data
• Producing Data
• Conclusions from Data

From the video clip,
Describe, using ONE example, how Statistics is used in Real World Application.

### Learning Challenge - Data Consolidation by Lee Kai En(14)

Neighbourhood: Choa Chu Kang
Bus stop no.: 30081
Time Started: 11.45Am
Time End:12.45pm
Bus services: 72,975

Based on your observation, what is the profile of the commuters during on a typical Friday, between 11.45 am to 12.45 pm.

The challenges i faced is that during the whole time, i was very,VERY bored and the buses that were stopping at the bus-stop thought that i wanted to board and stop but i did not want to actually. I felt awkward

If you were given a 2nd chance to capture data again, suggest at least ONE way to improve the process.
I would bring something there to do to spend my time.

### eLearning Challenge - Data Consolidation by Lovy Lim (07)

Messy Pictures, I know...

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Info+Pictures Credits/Kudos to: CHELSEA~thx chel :D

Information required:
• Neighbourhood (Woodlands)
• Name of Road/ Street (Woodlands Ave 7)
• Bus Stop number (47601)
• Bus-stop Name (Woodlands Ave 7, B02A)
• Bus Service (962,965,969)
• Time Started (11.30AM)
• Time Ended (12.30PM)

Based on your observation, what is the profile of the commuters during on a typical Friday, between 11.00 am to 12.30 pm?
There are many Old People and Teens boarding the buses there.

Reflections:
One of the problems I encountered when collecting data was: I'm Sorry I really don't know what to write since I didn't collect all these Info myself.But one problem I did encounter was that Chelsea's Information was all in a JPEG format,which meant I had to type everything out again in a Numbers File.And had to screenshot the Pictures in her post too.Finding someone in class to borrow info was hard so I decided to walk out of the class and into S1-07.I think one thing i might want to do if I ever did this myself,is that I will try to get permission to take pictures of EVERY SINGLE bus that drives to my bus stop(hopefully less buses).<(¯˘ ¯)>

### eLearning Challenge - Data Consolidation by Owen Ong (18)

Information required:
Neighbourhood: Queenstown
Bus Stop number : 11029
Bus-stop Name:Queensway-Blk 166 (B11029)
Time Started : 11.00am
Time Ended : 12.30pm
Bus services: 51,61,64,93,100,123,147,153,196,198,855,961. (642 private bus)

Based on your observation, what is the profile of the commuters during on a typical Friday, between 11.00 am to 12.30 pm?
There are no children that is older than primary one student. Most of them are adults.

What are the challenges you faced during the data collection period?
The people were looking at me. I felt nervous and hid the paper but now i know that doing that will make you look more suspicious.

If you were given a 2nd chance to capture data again, suggest at least ONE way to improve the process.
Maybe, i would move to a quieter area to collect data.

Sorry for the late submission. It is very hard to organize them...
-Owen Ong Chau Siong (18)

### eLearning Challenge - Data Consolidation by Sandy Khoo (8)

Information required:
Neighbourhood: Yishun
Bus Stop number : 59311
Bus-stop Name : Yishun Ring Road B26
Time Started : 11.10am
Time Ended : 12.30am

Buses Available: 558,812,1N,NR1

Pictures:

The Data Collection:

Based on your observation, what is the profile of the commuters during on a typical Friday, between 11.00 am to 12.30 pm?
They are mostly adults or senior citizens.

What are the challenges you faced during the data collection period?
I think it will be that the buses come and go really fast as no one was boarding the bus, causing me to not take too many pictures of the bus arriving. Also, the bus drivers was also looking at me with that suspicious look on their faces as I was alone in the bus-stop but not boarding an buses.(Can I call that a challenge?) The weather was also very hot.

If you were given a 2nd chance to capture data again, suggest at least ONE way to improve the process.
I think I will prepare my camera before-hand so that I'm ready to take pictures when the bus comes.

### eLearning Challenge - Data Consolidation by Abhimanyu Arora(09)

The profile of the commuters during on a typical Friday, between 12.00 am to 1.30 pm is "People going to work, teenagers, children".

The challenges were finding the estimated time on when the bus is coming.

If I got a second chance, I wold organise the data better and choose a bus stop with fewer busses as it is very tedious to find the data for a lot of busses.

### Learning Challenge - Data Consolidation by Poon Jia Qi (19)

Information required:
Neighbourhood: Dover
Bus Stop number : 19081
Bus-stop Name: Opp ACS boarding school
Time Started : 11.13pm
Time Ended : 12.30pm
Bus services: 14,33,74,166,196,642

• Based on your observation, what is the profile of the commuters during on a typical Friday, between 11.00 am to 12.30 pm
• What are the challenges you faced during the data collection period.
Sometimes many buses came at once, making it more challenging to record the data.
• If you were given a 2nd chance to capture data again, suggest at least ONE way to improve the process.
I would be more attentive and prepare more.

 The bus stop

### eLearning Challenge - Data Consolidation by Chan Shawn Kit(10)

Based on your observation, what is the profile of the commuters during on a typical Friday, between 11.00 am to 12.30 pm.
Ans: They are mostly adults or grandparents, with occasional pre-school children.
What are the challenges you faced during the data collection period.
Ans: It was a little boring to sit at complete vigilance for the buses to arrive, for some people, the number of buses passing through the bus stop may be too many.
If you were given a 2nd chance to capture data again, suggest at least ONE way to improve the process.
Ans: I would take down my data more neatly and easier to compute and organise. (And also bring a camera with battery and space)

### eLearning Challenge - Data Consolidation by Ryan Tan Zheng Ning (20)

The profile of the commuters during on a typical Friday, between 11.00 am to 12.30 pm. is: Elderly,Youths and Aunties.
Some of the challenges I faced would be when I could not find the estimated arrival time for some buses and when I thought I might have missed a bus.
Some ways to improve would to be more attentive when counting the buses.

### eLearning Challenge - Data Consolidation by Jonathan Foo (12)

Neighbourhood: Jurong West
Name Of Road: Jurong West Avenue 5
Bus Stop Number: 27441
Bus Stop Name: between blks 757/758
Time started: 11:00a.m.
Time ended: 12.30p.m.

Based on your observation, what is the profile of the commuters during on a typical Friday, between 11.00 am to 12.30 pm.
They are mostly Adults, elderly or teenagers.

What are the challenges you faced during the data collection period.
Sometimes, there were no commuters waiting to board or alight, so the bus did not stop at the bus stop, and just went on ahead, making it difficult for me to track the profile of the commuters. There were also times when the bus driver kept looking at me, because it was the same one from one of the previous buses, and I felt a bit weird. Other than these 2 challenges, I found this challenge easy.

If you were given a 2nd chance to capture data again, suggest at least ONE way to improve the process.
I would REMEMBER to bring a camera to take photos of the bus stop. Also, I might improve on the way that I collected data as I did not have a table prepared. Instead, I just wrote down the details of each bus as they came and left, making my process more time-consuming and tedious.