### 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.

1. (a) The horizontal axis represent the population of singapore while the vertical axis represent the different decades.
(b) Changes of population over time
(c)The population has been increasing over the years, the increase is increasing except for the last 2 decades. It also does not come in thousands.

-Owen Ong Chau Siong

2. a)The horizontal axis represents the decades of Singapore while the vertical axis represents the population size of the country in thousands.
b)Changes in the population size over 50 years.
c)The population size has been increasing while the rate of this increase is also increasing except for the last 2 decades.

3. (a)The horizontal axis represents the decades while the vertical axis represents the population of Singapore.

(b)Changes of population from 1970 to 2010.

(c)The population of Singapore has been increasing over the decades and this rate of increase is also increasing.

~Ding Nina Lin

4. (a) What do the horizontal and vertical axis of the bar graph represent?

The horizontal axis represent the years which is presented in intervals of 10. The vertical axis represents the numerical values of the population in Singapore in thousands.

(b) Give an appropriate title to the bar graph.

Population of Singapore from 1970 to 2010.

(c) If this is a 3-mark question, how would you describe the population of Singapore in the past 50 years?

Mavis Cheng
The population of Singapore has been increasing over the decades . The increase between each decade has increased over the past 50 years.

5. (a) The horizontal axis represents the years which is presented in intervals of decades. The vertical axis represents the numerical values of the population in Singapore in thousands.

(b)Population from 1970 to 2010.

(c) I would say that Singapore's population may/not be increasing. It could be that Singapore's Birth Rate may not be hand and instead there might be many immigrants who become Singapore citizens. However it may also be the opposite.

6. (a) The horizontal axis represents the various decades while the vertical axis represents the numerical values of Singapore's population in thousands.

(b) Singapore's population from 1970 to 2010

(c) I would say that SIngapore's population has been increasing over the past decades, and that the rate at which it increases also rises. This could be due to more immigrants coming to Singapore, or Singapore's birth rate has increased.

7. a. The horizontal axis represents the decades while the vertical axis represents the Singapore population which is in thousands .

b.Singapore's population throughout 5 decades .

c. Singapore's population for the past 50 years is increasing and the increasing rate is also increasing .

8. (a) What do the horizontal and vertical axis of the bar graph represent?
The horizontal represents the population of Singapore in thousands and the vertical axis represents the time in decades.

(b) Give an appropriate title to the bar graph.
Singapore's Population

(c) If this is a 3-mark question, how would you describe the population of Singapore in the past 50 years?
It has been increasing since 1970 and has increased by about 1 700 000 since 1970.

9. This comment has been removed by the author.

10. a)The horizontal axis represents the change of the Singapore population size over a period
The vertical axis represents the time
b)Singapore Population from 1970 - 2010
c) Over the years, the population of Singapore in the past 50 years have been increasing constantly due to more foreign talents and immigrants coming to Singapore.

11. Chan Shawn Kit3/30/2011 11:01:00 PM

a) Horizontal= Date of information taken with interval of ten years.
Vertical= Population size of Singapore.

b) Population of Singapore from 1970-2010

c) The population size of Singaporeans are increasing every new time they took the data, and the increase rate kept increasing until year 2000, where it thinned in increase.

12. @Owen

Check again:
The horizontal axis is commonly known as the "x axis". What do you find there?
Similarly, the vertical axis is commonly known as the "y axis", what do you find there?

It's not common that we use the term "decade" to describe the "Time"

Also indicate clearly 3 observations you drew out from the charts. You mentioned about Population increase. What are 2 other points?

13. @Ryan

Note that it's not common that we use the term "decade" to describe "Time".

Also indicate clearly 3 observations you drew out from the charts. You mentioned about Population increase. What are 2 other points?

14. @Nina

Note that it's not common to use "decade" to describe "Time".

Indicate clearly 3 observations you drew out from the charts. You mentioned about Population increase. How to describe "this rate of increase is also increasing" in a more concrete manner?

15. @Mavis

For (c), we are expecting 3 observations.

Population increase is one fo them.
What is the 3rd piece of information you could tell from the graph?

16. @Matthew

Interesting perspective the underlying causes to the change of population :)

On the other hand, if you were to "just" draw out information from the graph, what are 3 things you could say about the Population?

17. @Jonathan

You've given one possibility that could account from the increase in population. Good inference.

On the other hand, what are 3 things you could say about the Population, based on what's presented in graph?

18. @Qianhui

For (c), you've highlighted the increasing population.

Would you be able to describe the 2nd part using some concrete examples?

Then name one more information you could 'draw out' from the graph.

19. @Jia Qi

For (a)
Check again:
The horizontal axis is commonly known as the "x axis". What do you find there?
Similarly, the vertical axis is commonly known as the "y axis", what do you find there?

For (b)
You would need to be more specific (since there's a timeframe given in the horizontal axis)

For (c)
Good concrete information that you could draw out from the chart :)
On the other hand, since we know the figures are approximately, it would be approproate to say that, "over xxx years, the population has increased by approximately 1,700,000 since 1970"
You notice that the timeframe has been included?

20. @Abhi

For (b), the title is a bit too 'specific' as it's already describing a consistent trend. If the same chart is continue to be used for the next few decades, and there's a dip in the population, the word "increase" might not be appropriate then.

Usually, we keep the title neutral - just state the "what it is about"

(c) Good observation. The first point is very clear. For the end point, use concrete example to describe.

Check again:
The horizontal axis is commonly known as the "x axis". What do you find there?
Similarly, the vertical axis is commonly known as the "y axis", what do you find there?

The part on "change of Sinagpore population", check what's on the labels in the horizontal axis.

For (c), You've given one possibility that could account from the increase in population. Good inference.

What are 2 other things you could draw out from this graph?

22. @ Shawn Kit

For (a), to define "date", it comes with this format DD-MMM-YYYY. Check the horizontal axis, what is on the label?

For (c), how would you describe in a more concrete manner "the increase rate kept increasing until year 2000, where it thinned in increase"? (use some numbers to support the explanation).

23. @Ms Loh

(a) Whoops. The horizontal axis represents the years in decades. While the vertical axis represents the populations in thousands.

(b) The population of Singapore between 1970 and 2010

(c) Over 50 years, the population has increased by approximately
1 700 000 since 1970.

24. Mark :) :( :&#39;( (^^^) :D :O :42: O:) :p 3:) &lt;(&quot;)3/31/2011 08:38:00 AM

a) The horizontal axis is linear and represents the various years while the vertical axis, which is also linear, represents Singapore's population.

b) "Singapore's population from 1970 - 2010.

c) Singapore's population has been increasing, but in the last two decades, the rate of increase in the population has dropped, in contrast to the other 30 years. This could be due to a drop in birth rate, or that less immigrants are coming in to Singapore.
From the year 1970 - 1980, there has been about a 0.2 million increase in the population, which is around a 10% increase in the population.While from 1980 - 1990, there has been about a 0.4 million increase in the population, which is about a 20% increase in the population. This shows that in the 1900s, population increase was rising.

25. (a) What do the horizontal and vertical axis of the bar graph represent?
The horizontal axis represents the time frame of 10years and the vertical axis represents the population size.

(b) Give an appropriate title to the bar graph.
The population size of Singapore from 1970 to 2010.

(c) If this is a 3-mark question, how would you describe the population of Singapore in the past 50 years?
The population size is increasing. The increase on each decade is also increasing. Over the years, more people are coming into Singapore.

26. a)The horizontal axis, or x axis, represents years in decades. The vertical axis, or y axis, represents the population size of Singapore in thousands.

b)The population size of Singapore between 1970 and 2010.

c)The population size of Singapore has increased over the years. From 1970 to 2000, the increase of population in a decade is increasing, until 2010, when the increase of population in that decade decreased.

27. 1)The horizontal axis shows the years with an interval of 10 years each and the vertical axis shows the Singapore population in forms of thousands
2)Population of Singapore over the years
3)The rate of Singapore Population is increasing until 2010,Nowadays,people are not likely to give birth as the rate of population is decreasing,

28. 1. The vertical axis represent the population of singapore while the horizontal represent each decade starting from 1970.
2.Population of Singapore from 1970 to 2010.
3.The population of Singapore is increasing every decade and from 1970 to 2010, the percentage of increase is about 80%.

29. The three things I can say about the graph is that Singapore's population is increasing over the past few decades and that the increase is in the 500,000~600,000 range. The increase in population from 1970 to 2010 in about 80%.

30. a)The horizontal axis represents the decades while the vertical axis represents the population of Singapore.

b) The changes in population from 1970 to 2010.

c) The population has been going up throughout the years and the rate is increasing each decade.
Example:The difference between the population of 1990 and 1980 is larger compared to the difference between the population of 1970 and 1980.

31. (a)The horizontal axis represents the decades, while the vertical axis represents the population of Singapore.
(b)Population of Singapore
(c)The Population of Singapore is increasing.

32. a)The Horizontal axis stands for Decades while the Vertical axis represents the Singapore population in thousands.

b)The SIngapore Population From 1970-2010

c)I would describe Singapore to be a very unsuccessful country at first,therefore there were less people.But as time passed Singapore actually grew greater in all industries and therefore more people came here to look for job opportunities.

PS This Kevin Woo fan is Ishani :D

33. c. More foreigners might have come to Singapore so its population increased. The total increase from 1970 to 2010 is about 1.7 million.

34. a)The horizontal axis represents the decades of Singapore while the vertical axis represents the population size of the country in thousands.
b)Changes in the population size over 50 years.
c)It could be that foreign talents came to Singapore as Singapore's birth rate is always low so the only possible reason is that more foreign talents come

35. @ Miss Loh

c) The population of Singapore between 1970 and 2010 had increased over the years . The increase from the population in year 1970 to the population in year 2010 is approximately 1.7 million.

The rate of the increase has been increasing too.
Eg : There is an increase of 268.5 in the population in year 1970 and 1980.

There is an increase of 453.8 in the population of year 1980 and 1990.

There is an increase of 537.5 in the population of year 1990 to 2000.

The difference between each increasing is increasing.

Mavis Cheng

36. (a) What do the horizontal and vertical axis of the bar graph represent?
The Horizontal axis represents the time(years) while the vertical axis represents the population of Singapore over the years.
(b) Give an appropriate title to the bar graph.
Population of Singapore from 1970 to 2010
(c) If this is a 3-mark question, how would you describe the population of Singapore in the past 50 years?
The population of Singapore is Increasing.The percentage in which it increases is ALSO increasing.

37. (a) The horizontal axis represent the time(years) and the vertical axis represents the population of Singapore.

(b)Change of population of Singapore

(c) The total change of population from 1970 to 2010 is about 1.7 million. This could have happened because of more foreigners coming to Singapore.

~Nina

38. (a) The horizontal axis represents the time span which is every 10years and the vertical axis represents the population size in terms of thousands

(b)Change in population of singapore per decade.

(c)The population of singapore has been increasing with the biggest surge from 2000 to 2010,this could be because of foreigners moving to singapore

39. @Ms Loh

(a)Oops. The horizontal axis represents the years in decades. While the vertical axis represents the populations in thousands.

(b) The population of Singapore for the past 50 years

(c) Over the years, the population has increased by approximately
1 700 000 from 1970

40. The horizontal axis represent the time passed in the interval of decades. The vertical axis represents the number of people in thousands.

Singapore's Population

The population of Singapore increased from 1970 to 2010. This could be the result of more foreign talents immigrating to Singapore However the trend decreased from 1990 to 2010. This could be due to the decrease of foreign talents coming to Singapore to a drop in birth rate in Singapore.

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42. This comment has been removed by the author.

43. [a] The horizontal axis of the graph represents time with an interval of 10 years. The vertical axis represents the population.

[b] Singapore's population from 1970 to 2010.

[c] The population of Singapore has increased by 1758.1 million from 1970 till 2010. The percentage of increase is also increasing.