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Contents
TOPIC PAGEIntroduction 1-2
Appreciation 3
A Brief History of Statistics 4
Statistics Today 5Part 1 6-11
Part 2 12-16
Part 3 17-19
Further Exploration
-Air Pollution Index
-Limitation of the AQI-Causes of Poor Air Quality
-Indices by Location
-Stock Market Index
-Types of Indices
- Index Versions
-Uses and Importance of AirPollution Index and Stock Market
Index
20-26
Conclusion 27
Reflection 28
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PROJECT WORK FOR ADDITIONAL
MATHEMATHICS 2010
CURRICULUM DEVELOPMENT DIVISION
MINISTRY OF EDUCATION MALAYSIA
PROJECT WORK 4
STATISTICS
NAME: NGEH CHEE JEN
CLASS: 5 PUTIH
IC NUMBER: 931026-08-6099
SUBJECT TEACHER: MR AZMI BIN NAZAR
SEKOLAH MENENGAH KEBANGSAAN METHODIST
AYER TAWAR
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INTRODUCTION
We students taking Additional Mathematics are required to carry out a project work while
we are in Form 5.This year the Curriculum Development Division, Ministry of Education has
prepared four tasks for us. We are to choose and complete only ONE task based on our area
of interest. This project can be done in groups or individually, and I gladly choose to do thisindividually. Upon completion of the Additional Mathematics Project Work, we are to gain
valuable experiences and able to:
-Apply and adapt a variety of problem solving s trategies to solve
routine and non-routine problems
-Experience classroom environments which are challenging,
interesting and meaningful and hence improve their thinking skills
-Experience classroom environments where knowledge and skills are
applied in meaningful ways in solving real-life problems.
-Experience classroom environments where expressing ones
mathematical thinking, reasoning and communication are highly
encouraged and expected
-Experience a classroom environment that stimulates and enhances
effective learning.
-Acquire effective mathematical communication through oral and
writing, and to use the language of mathematics to express
mathematical ideas correctly and precisely
-Enhance acquisition of mathematical knowledge and skills through
problem-solving in ways that increase interest and confidence
-Prepare ourselves for the demand of our future undertakings and in
workplace
-Realise that mathematics is an important and powerful tool in
solving real-life problems and hence develop positive attitudetowards mathematics
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-Train ourselves not only to be independent learners but also to
collaborate, to cooperate, and to share knowledge in an engaging
and healthy environment
-Use technology especially the ICT appropriately and effectively
-Train ourselves to appreciate the intrinsic values of mathematics and
to become more creative and innovative
-Realize the importance and the beauty of mathematics
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APPRECIATION
Completing this project has been a most wonderful and enjoyable experience. In
doing so, I have learnt a great many things about index numbers, price comparison,
graphical representations and price index. Firstly, I would like to thank my Additional
Mathematics teacher, Mr. Azmi Nazar for his guidance and also giving me useful and
important information to complete this project work. Besides, I would like to thank my
parents for their support and encouragement. Last but not least, a big THANK YOU too to all
my friends for their help and cooperation in searching for information to complete this
project work.
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A BRIEF HISTORY OF STATISTICS
By the 18th century, the term "statistics" designated the systematic collection of
demographic and economic data by states. In the early 19th century, the meaning of
"statistics" broadened, then including the discipline concerned with the collection, summary,
and analysis of data. Today statistics is widely employed in government, business, and allthe sciences. Electronic computers have expedited statistical computation, and have
allowed statisticians to develop "computer-intensive" methods.
The term "mathematical statistics" designates the mathematical theories of probability and
statistical inference, which are used in statistical practice. The relation between statistics
and probability theory developed rather late, however. In the 19th century, statistics
increasingly used probability theory, whose initial results were found in the17th and 18th
centuries, particularly in the analysis of games of chance (gambling). By 1800, astronomy
used probability models and statistical theories, particularly the method of least squares,
which was invented by Legendre and Gauss. Early probability theory and statistics was
systematized and extended by Laplace; following Laplace, probability and statistics have
been in continual development. In the 19th century, social scientists used statistical
reasoning and probability models to advance the new sciences of experimental ps ychology
and sociology; physical scientists used statistical reasoning and probability models to
advance the new sciences of thermodynamics and statistical mechanics. The development
of statistical reasoning was closely associated with the development of inductive logic and
the scientific method.
Statistics is not a field of mathematics but an autonomous mathematical science, like
computer science or operations research. Unlike mathematics, statistics had its origins in
public administration and maintains a special concern with demography and economics.
Being concerned with the scientific method and inductive logic, statistical theory has close
association with the philosophy of science; with its emphasis on learning from data and
making best predictions, st atistics has great overlap with the decision science and
microeconomics. With its concerns with data, statistics has overlap with information science
and computer science.
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STATISTICS TODAY
During the 20th century, the creation of precise instruments for agricultural research, public
health concerns (epidemiology, biostatistics, etc.), industrial quality control, and economic
and social purposes (unemployment rate, econometry, etc.) necessitated substantial
advances in statistical practices. Today the use of statistics has broadened far beyond itsorigins. Individuals and organizations use statistics to understand data and make informed
decisions throughout the natural and social sciences, medicine, business, and other areas.
Statistics is generally regarded not as a subfield of mathematics but rather as a distinct,
albeit allied, field. Many universities maintain separate mathematics and statistics
departments. Statistics is also taught in departments as diverse as psychology, education,
and public health.
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PART 1
The prices of goods sold in shops vary from one shop to another. Shoppers tend to buy
goods which are not only reasonably priced but also give value for their money. You are
required to carry out a survey on four different items based on the following categories i.e.
food, detergent and stationery. The survey should be done in three different shops.
QUESTION
a) Collect pictures, newspaper cuttings or photos on items t hat you have chosen. Design a
collage to illustrate the chosen items
Answer:
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(b) Record the items and their prices systematically as in Table 1.Since items maybe
differently packed, be sure to use consistent measurements for each item selected so that
comparison can be done easily and accurately.
Answer:
Category
Item Price(RM)
Shop A Shop B Shop C
Food 1. Self-Raising Flour (1000g) 3.70 3.60 3.99
2. Sugar (1000g) 1.65 1.65 1.65
3. Butter (250g) 4.10 4.50 4.30
4. Eggs(Grade A) 0.32 0.33 0.35
Total Price 9.77 10.08 10.29
Detergent 1. Liquid Detergent 12.90 12.95 12.99
2. Floor Cleaner 8.90 9.00 8.99
3. Clothes Softener 6.80 6.89 6.99
4.Powder Detergent 13.90 10.99 13.99Total Price 42.50 39.83 42.96
Stationery 1. Ballpoint Pen 1.60 1.50 1.70
2. Liquid Paper 3.70 3.60 3.99
3. Ruler 0.45 0.50 0.50
4. Eraser 1.30 1.00 1.30
Total Price 7.05 6.60 7.49
Grand Total 59.32 56.51 60.74
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(c) Create at least two suitable graphical representations (the use of ICT is encouraged) to
compare and contrast the price of the items chosen.
Answer:
Food
Detergent
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Shop A Shop B Shop C
Self-Raising Flour (1000g)
Sugar (1000g)
Butter (250g)
Eggs(Grade A)
0
2
4
6
8
10
12
14
16
Shop A Shop B Shop C
Liquid Detergent
Floor Cleaner
Clothes SoftenerPowder Detergent
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Stationary
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Shop A Shop B Shop C
Ballpoint Pen
Liquid Paper
uler
Eraser
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(d) B
sed on the graphical representation that you haveconstructed in Part 1(c),interpret,
discuss and draw conclusions
Comment on your findings
Answer:
Based on the graphical representation that I haveconstructed in Part 1(c), it isshown that
there are large and small differences among the pries of items in each category between the
shops
In the food category, thesmallest pricedifferences areeggs, while the highest is the price of
butter. Sugar is a controlled item so the price in all threesupermarkets are thesame which
is RM 1.65 per kilo. Besides food, detergent also shows a large price difference between its
items. Among them are the price ofclothessoftener and powder detergent. On the other
hand, stationery items dont have any obvious pricedifference. The graph also show that
most of the items that are high priced comes fromShop C, while the lowest price items
come from theShop B. The graph 1(d) will show theconclusion of the difference among the
shops based upon theshops grand total.
Graph 1(d)
54
55
56
57
58
59
60
61
Grand Total
Shop A
ShopB
Shop C
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(e) Identify an item that has a large price difference among the shops. Calculate the mean
and standard deviation of that particular item. Hence, suggest and discuss possible reasons
for the price difference.
Answer:
Powder Detergent
Mean,=
=12.96
Standard deviation
= /N -
=
=1.393
Based on my research, I found out that Shop A sold this product for RM 13.90, Shop B for
RM 10.99 and Shop C RM 13.99. Shop B obviously has the lowest price. The reason for the
price difference could be because Shop B is currently having a Mega Sale or are trying to
clear old stock to bring in new ones. Besides, Shop B could be having promotions for this
item and are giving out free samples along with t he item where else Shop A and Shop C are
selling at standard price.
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PART 2
Every year SMK Indah organises a carnival to raise funds for the school. This year the school
plans to install air conditioners in the school library. Last year, during the carnival, your class
made and sold butter cakes. Because of the popularity of the b utter cakes, your class has
decided to carry out the same project for this years carnival.
QUESTION
(a) Suggest a shop from Part 1 which you would go to purchase the ingredients for the
butter cakes. State and discuss your reasons for purchasing from the shop you suggested.
Answer:
Shop A. This is because the total price of the ingredients for baking the butter cakes from
this shop is the lowest among the three shops. Therefore I can save a lot from buying the
ingredients.
(b) Complete Table 2 with the prices of the items found in the Shop/supermarket that you
have chosen
Answer:
Ingredient Quantity per cake Price in the year
2009 (RM)
Price in the year
2010 (RM)
Self-raising flour 250g 0.90 0.93
Sugar 200g 0.35 0.33
Butter 250g 3.30 4.10
Eggs (Grade A) 5 eggs (300g) 1.25 1.60
Table 2
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(i)Calculate the price index for each of the ingredients in Table 2 for the year 2010 based on
the year 2009
Answer:
Ingredient Quantity
per cake
Price in the
year
2009 (RM)
Price in the
year
2010 (RM)
Price index for the
year 2010 based on the
year 2009 (I)
Self-raising
flour
250g 0.90 0.93 103.33
Sugar 200g 0.35 0.33 94.29
Butter 250g 3.30 4.10 124.24
Eggs (Grade A) 5 eggs
(300g)
1.25 1.60 128.00
1.Self-Raising Flour
I = x 100
=103.33
2.Sugar
I = x 100
=94.29
3.Butter
I = x 100
=124.24
4.Eggs (Grade A)
I = x 100
=128.00
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(ii)Calculate the composite index for making a butter cake in the year 2010 based on the
year 2009.Discuss how you obtained your answers.
Answer:
To calculate the composite index, weightage is needed
(W), Weight/Total weight
Ingredient Weightage (W)
Self-Raising Flour 250 1000 = 0.25
Sugar 200 1000 = 0.20
Butter 250 1000 = 0.25
Eggs (Grade A) 300 1000 = 0.30
Composite Index
=
=
= 114.15
(iii)In the year 2009, the butter cake was sold at RM15.00 each. Suggest a suitable sellingprice for the butter cake in the year 2010.Give reasons for your answer.
Answer:
In 2009, RM 15.00
In 2010, price is
x 100 =114.15 % x 100 = 114.15 x 15
=
= 17.12
Thus, the suitable price for the butter cake for the year 2010 is RM 17.12 .The increase in
price is also suitable because of the rise in the price of the ingredients.
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(c)
(i)Find out from reliable source how to determine suitable capacity of air conditioner to be
installed based on the volume/size of a room.
Answer:
For common usage, air conditioner is rated according to horse power (1HP), which is
approximately 750Watts of electrical power. It is suitable for a room size 1000ft which is
around 27m of volume.
(ii)Work in group to estimate the volume of your school Library. Explain how you arrive at
your answer. Hence, determine the number of air conditioners with the appropriate
capacity required for your library.
Answer:
After discussions and some measurements, my friends and I have come to the conclusion
that the volume of our school is 11,550 cubic feet [ 30ft X 35 ft X 18ft] or 311.85 311.9m
[9m X10.5m X 5.5m]. This measurement was achieved by counting the number of 3x3 ft
asbestos ceiling in our school library. The height of the library is the standardized 11 feet.
When choosing an air conditioner, usually a 1HP [horse power] equipment can reduce 9,000
BTU/hr of heat. The cooling capacity of an air conditioning system is expressed in BTUs or
tons. One ton of cooling capacity equals 12,000 BTUs/hour of cooling capacity and also
referring to the cooling capacity of a ton of ice. The number of air conditioner needed for
the school library:
For 311.9 m= = 11.6 12
This means our school library needs approximately 12 units of air conditioner.
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(iii)If your class intends to sponsor one air conditioner for the School library, how many
butter cakes must you sell in order to buy the air conditioner
Answer:
The cost for 1 unit of 1HP air conditioner = RM1270
Cost for a cake = 0.93 + 0.33 + 4.1 + 1.6
= RM 6.96
Selling price = RM17.12
Profit = 17.12 -6.96
= RM 10.16
Number of cakes to be sold to buy 1 unit of air conditioner =
= 125
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PART 3
As a committee member for the carnival, you are required to prepare an estimated budget
to organize this years carnival. The committee has to take into the consideration the
increase in expenditure from the previous year due to inflation. The price of foo d,
transportation and tents has increased by 15%. The cost of games, prizes a nd decorationsremains the same, whereas the cost of miscellaneous items has increase by 30%.
QUESTION
(a)Complete Table 3 based on the information given above
Answer:
Expenditure Amount in 2009(RM) Amount in 2010(RM)
Food 1200.00 1380.00
Games 500.00 500.00
Transportation 300.00 345.00
Decorations 200.00 200.00
Prizes 600.00 600.00
Tents 800.00 920.00
Miscellaneous 400.00 520.00
Table 3
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(b)Calculate the composite index for the estimated budget of the carnival in the year 2010
based on the year 2009. Comment on your answer.
Answer:
Expenditure Amount in
2009(RM)
Amount in
2010(RM)
Price
Index, I
Weightage,
W
Food 1200.00 1380.00 115 12
Games 500.00 500.00 100 5
Transportation 300.00 345.00 115 3
Decorations 200.00 200.00 100 2
Prizes 600.00 600.00 100 6
Tents 800.00 920.00 115 8
Miscellaneous 400.00 520.00 130 4
Composite Index
=
= =
= 111.625
The total price for the year 2009 is RM4000 while the total price for the year 2010 is
RM4465. The total price for the year 2010 has increased by 11.625%.This is because some
items have increased in price in the year 2010.
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(c)The change in the composite index for the estimate budget for the carnival from the year
2009 to the year 2010 is the same as the change from the year 2010 to the year 2011.
Determine the composite index of the budget for the year 2011 based on the year 2009.
Answer:
Composite index for the year 2009 to the year 2010=111.625
Composite index for the year 2010 to the year 2011= 111.625
x 100 = I x I
I = 111.625 x 111.625 x
I
= 124.60
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FURTHER EXPLORATION
Index numbers are being used in many different daily situations, for example air pollution
index, stock market index, gold index and property index.
Obtain information from the internet or other reliable sources on the importance of two
different types of index number of your choice. Elaborate the use and the importance of
these index numbers in daily life.
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Further Exploration
Index numbers are being used in many different daily situations, for example air
pollution index, stock market index, gold index and property index
Obtain information from the internet or other reliable sources on the importance of
two different types of index numbers of your choice. Elaborate the use and the importanceof this index number in daily life.
Air Pollution Index
Air pollution is the introduction of chemicals, particulate matter, or biological materials that
cause harm or discomfort to human or other living organisms, or damages the natural
environment into the atmosphere.
The atmosphere is a complex dynamic natural gaseous system that is essential to support
life on planet Earth. Stratospheric ozone depletion due to air pollution has long been
recognized as a threat to human health as well as to the Earths ecosystems.
The Air Quality Index (AQI) (also known as the Air Pollution Index (API) or Pollutant
Standard Index (PSI) is a number used by government agencies to characterize the quality
of the air at given location. As the AQI increased, an increasingly large percentage of the
population is l ikely to experience increasingly severe adverse health effects. To compute
the AQI requires an air pollutant concentration from a monitor or model. The function used
to convert from air pollutant concentration to AQI varies by pollutant, and is different in
different countries. Air quality index values are divided into ranges and each range is
assigned a descriptor and a colour code. Standardized public health advisories are
associated with each AQI range. An agency might also encourage members of the public to
take public transportation or work from home when AQI level are high.
Limitation of the AQI
Most air contaminants do not have an associated AQI. Many countries monitor ground -level
ozone, particulates, sulphur dioxide, carbon monoxide and nitrogen d ioxide and calculate air
quality indices for these pollutants.
Causes of Poor Air Quality
The AQI can worsen (go up) due to lack of dilution of are emissions by fresh air. Stagnant air,
often caused by an anticyclone or temperature inversion, or other lack of winds lets air
pollution remain in a local area.
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Indices by Location
South Korea
The Ministry of Environment of South Korea uses the Comprehensive Air quality Index (CAI)
to describe the ambient air quality based on health risk of air pollution. The index aims to
help the public easily understand air quality and protect the health of people from air
pollution. The CAI has values of 0 through 500, which are divided into six categories. The
higher the CAI value, the greater the level of air pollution. Of values of the five air pollutants,
the highest is the CAI value.
CAI Description Health Implication
0 50 Good A level that will not impact patients suffering from
diseases related to air pollution
51 100 Moderate A level which may have a meagre impact on patients
in case of chronic exposure101 150 Unhealthy for sensitive
group
A level that may have harmful impacts on patients
and members of sensitive groups
151 250 Unhealthy A level that may have harmful impacts on patients
and members of sensitive groups(children, aged or
weak people) and also cause the general public
unpleasant feelings
251 350 Very unhealthy A level which may have a serious impact on patients
and members of sensitive groups in case of acute
exposure
351 - 500 Hazardous A level which may need to take emergency measures
for patients and members sensitive groups and haveharmful impacts on the general public
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Malaysia
The air quality in Malaysia is reported as the API or Air Pollution Index. Four of the indexs
pollutant components (i.e., carbon monoxide, ozone, nitrogen dioxide and sulphur dioxide)
are reported in PM10 particulate matter is reported in g/m3
Unlike the American AQI, the index number can exceed 500. Above 500, a state of
emergency is declared in the reporting area. Usually, this means that non-essential
government services are suspended, and all ports in the affected area closed. There may
also be a prohibition on private sector commercial and industrial activities in the reporting
area excluding the food sector.
*An AQI of PM10 corresponds to a PM10 level of 150 micrograms per cubic meter (averaged
over 24 hours)
Index Values* Levels of Health
Concern
Cautionary Statement
0 50 Good None
51 100 Moderate None
101 150 Unhealthy for
sensitive groups
People with respiratory diseases such as asthma,
should limit outdoor exertion
151 200 Unhealthy People with respiratory diseases such as asthma,
should limit outdoor exertion; everyone else,
especially the elderly and children, should limit
prolonged outdoor exertion
201 300 Very unhealthy People with respiratory diseases such as asthma,
should limit outdoor exertion; everyone else,
especially the elderly and children, should limitprolonged outdoor exertion
301 500 Hazardous Everyone should avoid any outdoor exertion; people
with respiratory disease, such as asthma, should
remain indoors
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Stock Market Index
There are a number of interesting observations that one can make from this graph:
The MACD indicator (bottom section of graph) has just given a sell signal
as evidenced by the blue histogram bars falling below the zero line. These
signals do not occur often the last one, a buy signal, was given in May
2003 and the sell signal before that happened in Sep tember 1999.
The more sensitive RSI (internal relative strength) oscillator (top section of
graph) has fallen below 70, thereby giving its first sell signal since 1998. (A
buy signal was registered four years later in 2002.)
The 20- and 40-month moving averages (middle section of graph) are still
intact, but these are lagging indicators and the turning down and crossing
over of the two lines typically only serve as final confirmation of turningpoints in the index.
A stock market index is a method of measuring a section of the stock market. Many indices
are cited by news of financial services firms and are used as benchmarks to measure the
performance of portfolios such as mutual funds.
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Types of indices
Stock market indices may be classed in many ways. A world or global stock market index
includes (typically large) companies without regard for where they are domiciled or traded.
Two examples are MSCI World and S&P Global 100.
A national index represents the performance of the stock market of a given nation-and by
proxy, reflects investor sentiment on the state of its economy. The most regularly quoted
market indices are national indices composed of the stocks of large companies listed on a
nations largest stock exchanges such as the American S&P500, the Japanese Nikkei 225 and
the British FTSE 100.
The concept many be extended well beyond an exchange. The Dow Jones Total Stock
Market Index as its name implies represents the sticks of nearly every publicly traded
company in the United States including all U.S stocks traded on the New York Stock
Exchange (but not ADRs) and most traded on the NASDAQ and American Stock Exchange.
Russell Investment Group added to the family of indices by launching the Russell Global
Index.
More specialised indices exist tracking the performance of specific sectors of the market.
The Morgan Stanley Biotech Index for example consists of 36 American firms in the
biotechnology industry. Other indices may track companies of a certain size, a certain type
of management, or even more specialized criteria one index published by Linux Weekly
News tracks stocks of companies that sell products and services based on the Linux
operating environment
Index Versions
Some indices, such as the S&P 500, have multiple versions. These versions can differ based
on how the index components are weighed and on how dividends are accounted for. For
example, there are three versions of the S&P 500 index: price return, which only considers
the price of the components, total return, which accounts for dividend reinvestment and
net total return, which accounts for dividend reinvestment after the deduction of a
withholding tax. As another example, the Wilshire 4500 and Wilshire 5000 indices have five
versions each: full capitalization total return, full capitalization total return, full
capitalization price, float-adjusted total return, float adjusted price and equal weight. The
difference between the full capitalization, float -adjusted and equal weight versions is in how
index components are weighed.
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Uses and importance of air pollution index and stock market index
As everyone can see, the air pollution index is used by the government to measure
the air quality index and to detect any pollutants in our countrys air. This is to ensure the air
is clean and safe for us to inhale. Besides, an early warning can be given to us if the air
pollution is too high for us to get out of our homes. This warning is given based uponreadings and interpretations of the air pollution index.
As for stock market index, it is mainly for the business entrepreneurs. This type of
index is used to determine the outcome of a stock market and also the conclusion of a stock
market. The stock market index is important because a countrys economical state
sometimes depend on it.
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Conclusion
After doing some researches, answering questions, drawing graphs and some
problem solving, I realize that the usage of statistics is very important in our daily life. It is
not just widely used in markets but also in interpreting the condition of the surrounding like
the air or the water. It is used especially in conducting air-pollution or water-pollutionsurveys. In conclusion, statistics is a daily life necessity. Without it, surveys cannot be
conducted, the stock market cannot be interpreted and many more. So, we should be
thankful to the people who contributed in the idea of statistics.
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REFLEC
N
After spending countless hours, days and night to finish this project and also sacrificing my
time in this midyear holiday, there areseveral things that I want to say
In the process of completing this project, it makes me realize how important Additional
Mathematics is to everydays life. In addition, completing this project makes me realize how
fun it is and likable is Additional Mathematics. To those who still dont really like thissubject,
you must takeyour first step to love it. You must make it likeyour friend. Then you will also
realize how important it is in your life.
IADDITIONAL
MATHEMATICS