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Page 1: Mr. Zain report the news using data, table, and graphs. Mr ... · Mr. Zain report the news using data, table, and graphs. Mr. Zain will help us to study about data processing, how
Page 2: Mr. Zain report the news using data, table, and graphs. Mr ... · Mr. Zain report the news using data, table, and graphs. Mr. Zain will help us to study about data processing, how

1 Module for Primary School Student Grade 6: Data Processing

Mr. Zain report the news using data, table, and graphs. Mr. Zain

will help us to study about data processing, how to collect and

how to present the data.

Page 3: Mr. Zain report the news using data, table, and graphs. Mr ... · Mr. Zain report the news using data, table, and graphs. Mr. Zain will help us to study about data processing, how

2 Module for Grade 6 Primary School Students: Data Processing

Data Processing

Learning Goals:

After studying this lesson, you are expected to be able to:

1. increase the awareness of students on the danger of

disasters in their daily lives.

2. help and facilitate students with the scientific and practical

knowledge about disaster risks (before, during, and after the

disasters) and related skills to reduce or minimize it.

3. increase students’ beliefs on the importance of mathematics,

science, and technology that will motivate them having good

attitudes toward mathematics, science, and technology.

4. increase the awareness of students to predict and anticipate

the earthquakes and tsunamis.

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3 Module for Grade 6 Primary School Students: Data Processing

A. COLLECTING DATA

Standard Competence 1. Collecting and Managing Data

Basic Competence

1.1 Collecting and reading data Indicators: The student will be able to collecting and reading data from secondary or primary resources

1.2 Processing and presenting data in a table form

Indicators: The students will be able to sort the data and present data in tabular form (table)

1.3 Sort the data include to determine the maximum and minimum data Indicators: The students will able to determine minimum and maximum value of the data sets

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4 Module for Grade 6 Primary School Students: Data Processing

Toya Chiba, a reporter for local newspaper Iwate Tokai Shimbun, is swept up by a

tsunami at Kamaishi port, Iwate prefecture during the March 11 earthquake and

tsunami. Chiba managed to survive the tsunami by grabbing a dangling rope and

climbing onto a coal heap around 8 meters high after being swept away for about 30

meters, Kyodo news reports. Photo taken on March 11, 2011 and released by

Kamaishi Port Office via Kyodo on April 14, 2011. (Reuters/Kamaishi Port Office via

Kyodo)

Now imagine that Mr. Zain is collecting data of the children who stay in a shelter

after earthquake and tsunami hit their homes. This cards show the names and

months of the birthdays of Ahmad and his friends.

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5 Module for Grade 6 Primary School Students: Data Processing

Mr. Zain presented the data using a table like this:

NO NAMES MONTH OF BIRTHDAY

1 Ahmad May

2 Satya March

3 Ajeng June

4 Laras February

5 Adjie October

6 Gulang February

Name: Ajeng

Month of birthdays:

June

picture Name: Satya

Month of birthdays:

March

picture

Name: Adjie

Month of birthdays:

October

picture Name: Laras

Month of birthdays:

February

picture

Name: Gulang

Month of birthdays:

February

picture Name: Ahmad

Month of birthdays:

May

picture

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6 Module for Grade 6 Primary School Students: Data Processing

From that table we can get information by answering this following question:

a. Gulang’s birthday is in the month of ______________

b. ________________ birthday is in the month of October.

c. Two children were born in the month of _______________

d. If all of them were born in the same year,

(i) Who is the youngest?

(ii) Who is the oldest?

(iii) Who are younger than Ajeng?

(iv) Who is older than Satya?

Presents data in a table make easier to read the information.

Two kinds persons came to the shelter and brought foods for the children. At the

dining area, Mr. Zain counted the numbers of each type of foods brought.

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7 Module for Grade 6 Primary School Students: Data Processing

Bread

Chicken

Candy

Chocolate Noodles

Others

Mr. Zain added the tallies to find the number of the children under each type of

foods. Then he presented his data in a table like this:

NOTE: there are five children who got bread. Instead of marking five |||||, we use the

fifth tally to cross the others four tallies like this .This way of showing groups of

five tallies make it easy to total the tallies at the end.

Bread

Chicken

Candy

Chocolate

Noodles

Others

10 7 12 14 11 9

Use that table to answer this following question

a. What was the most popular food?

b. What was the least popular food?

c. How many children were at the dining area in the shelter?

d. How many more children got chocolate than candies?

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8 Module for Grade 6 Primary School Students: Data Processing

What was the doctor done in the picture?

Yes, the doctor collected data of the children

The doctor checking the children’s health in earthquake shelter. He measure the

weight and present the data in this table

NO NAME WEIGHT

(KG)

1 Azizah 42

2 Bondan 40

3 Dhea 42

4 Dessy 43

5 Dhimaz 45

6 Daffa 45

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9 Module for Grade 6 Primary School Students: Data Processing

7 Emmy 42

8 Febry 45

9 Marita 44

10 Dite 46

11 Rio 43

12 Renta 48

13 Galang 43

14 Tyas 47

15 Rofiana 49

16 Yuliana 44

17 Sandra 50

To read the data easier, Mr. Zain help the doctor to arrange the data from the

smallest number to the biggest number.

And the result is as we can see in this table:

NO NAME WEIGHT

(KG)

1 Bondan 40

2 Azizah 42

3 Dhea 42

4 Emmy 42

5 Dessy 43

6 Rio 43

7 Galang 43

8 Marita 44

9 Yuliana 44

10 Dhimaz 45

11 Daffa 45

12 Febry 45

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10 Module for Grade 6 Primary School Students: Data Processing

13 Dite 46

14 Tyas 47

15 Renta 48

16 Rofiana 49

17 Sandra 50

From the arranged table, we can read the data easier. We can find the maximum

and the minimum data easier.

- The heaviest is _____________, the weight is ____________ kg

- The lightest is ______________, the weight is ___________ kg

The haviest data is called maximum data.

The lightest data is called minimum data.

You can collect data from the various sources, such as from:

- Body height

- Body weight

- Favourite food

- Favourite colour

- Favourite lesson

- Distance between your school and your home

LET’S PRACTICE

Work in groups

Collect data from the members of your group. (You can collect any kind of data).

Write down the result in the following table. Use tally to record the data. Then count

the tallies and complete the last column of the table. Then arrange the data from the

smallest data to the biggest data.

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11 Module for Grade 6 Primary School Students: Data Processing

TITLE: ____________________________________________________________

NO CRITERIA TALLY NUMBER OF CHILDREN

The Criteria can be filled in with the interval of the measure of your activity.

For example: 20-22 Kg.

23-25 Kg. and so on. Or,

150-159 cm

160-169 cm and so on.

Study the table and write five questions about it.

The following are some helping words

- How many children

- The least

- The most

- Fewer than

- More than

- Altogether

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12 Module for Grade 6 Primary School Students: Data Processing

B. PRESENTING DATA IN SOME TYPES OF CHART

1. BAR GRAPHS

When Tsunami hits Japan in 2011 some people were missing and death. This map

picture shows data of the victims. Read and study this picture. The Yellow numbers

shows how many people are missing.

Standard Competence 2. Solve problem related to the data

Basic competence

2.1 Presents data to the form of tables and pictograph and bar graph and pie chart. Indicators: The students will able to: a. Collecting data by counts up, measuring and recording data

with tally b. Presenting discrete and continous data in tables and

diagrams: pictograms, bar charts, pie charts and line graphs

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13 Module for Grade 6 Primary School Students: Data Processing

From some of the data in the picture we can make this table:

No Place The number of Missing Person

1 Miyako 121

2 Yamada 211

3 Otsuchi 576

4 Kamaishi 198

5 Ofunato 107

6 Rikuzen 385

7 Kesennuma 383

And presents in this graphs

Graphs of Missing Persons

This graph is called Bar graphs.

0

100

200

300

400

500

600

700

Miyako Yamada Otsuchi Kamaishi Ofunato Rikuzen Kesennuma

The numbers of the missing persons

Place

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14 Module for Grade 6 Primary School Students: Data Processing

This graph shows the numbers of the victims of the most fatal Japanese

earthquakes and tsunamis

Sources: http://www.coastal.jp/tsunami2011/

2302431000

800013000 15000 12000

6757 7273

27000

99000

5502

0

20000

40000

60000

80000

100000

120000

1293 1498 1586 1771 1792 1847 1855 1891 1896 1923 1995

The numbers of the victim

Year

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15 Module for Grade 6 Primary School Students: Data Processing

Using data from the graph, complete the following table

NO YEAR THE NUMBERS OF VICTIM

1

2

3

4

5

6

7

8

9

10

11

Study the table and answer this following question:

a. How many victims in the year of 1995?

b. How many victims during all the earthquake hits altogether?

c. In what year did the earthquake take the most victims?

d. In what year did the earthquake take the least victims?

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16 Module for Grade 6 Primary School Students: Data Processing

2. LINE GRAPHS

Seismograph

Indonesia is one of the country that often hits by earthquake and tsunami. They

using seismograph to scale the earthquake This table shows the earthquake that

hits during August 2012.

No Date Time Richter Scale

Place

1 30/08/2012 13:56:41 WIB 5.1 SR 73 km Timur Laut SERAM

BAGIANTIMUR-MALUKU

2 28/08/2012 22:51:04 WIB 5.7 SR 313 km Barat Daya KOTA-BANDA ACEH

3 27/08/2012 16:01:23 WIB 5.1 SR 33 km Barat Laut TOBA SAMOSIR-

SUMUT

4 26/08/2012 22:05:36 WIB 6.8 SR 115 km Barat Laut HALMAHERA BARAT-

MALUT

5 22/08/2012 17:59:52 WIB 5.2 SR 424 km Barat Daya BANTUL-DIY

6 21/08/2012 10:09:37 WIB 5.4 SR 73 km Barat Daya BENGKULU SELATAN

7 20/08/2012 18:18:21 WIB 5.7 SR 432 km Barat Daya KAB-ACEH JAYA

8 19/08/2012 08:57:02 WIB 5.1 SR 107 km Barat Daya KOTA-BANDA ACEH

9 18/08/2012 16:41:53 WIB 6.2 SR 27 km Barat Daya PARIGI MOUTONG-

SULTENG

10 14/08/2012 04:12:30 WIB 5.0 SR 443 km Barat Daya KAB-ACEH JAYA

11 10/08/2012 11:41:42 WIB 5.2 SR 67 km Barat Laut NIAS UTARA-SUMUT

12 09/08/2012 18:04:25 WIB 5.6 SR 61 km Tenggara LOMBOK TENGAH-NTB

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17 Module for Grade 6 Primary School Students: Data Processing

13 05/08/2012 12:58:04 WIB 5.1 SR 112 km Timur Laut MALUKU TENGGARA

14 04/08/2012 09:00:27 WIB 5.1 SR 60 km Barat Daya PESISIR SELATAN-

SUMBAR

Sources: http://geospasial.bnpb.go.id/pantauanbencana/data/datagempa.php

From that data we can make the Line Graph of the day that tsunami hits and the

magnitude of the earthquake.

Using data from the graph, complete the following table

NO DATE RICHTER SCALE

1

2

3

4

5

4.5

5

5.5

6

6.5

7

04/0

8/20

1205

/08/

2012

06/0

8/20

1207

/08/

2012

08/0

8/20

1209

/08/

2012

10/0

8/20

1211

/08/

2012

12/0

8/20

1213

/08/

2012

14/0

8/20

1215

/08/

2012

16/0

8/20

1217

/08/

2012

18/0

8/20

1219

/08/

2012

20/0

8/20

1221

/08/

2012

22/0

8/20

1223

/08/

2012

24/0

8/20

1225

/08/

2012

26/0

8/20

1227

/08/

2012

28/0

8/20

1229

/08/

2012

30/0

8/20

12

Richter scale

Date

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18 Module for Grade 6 Primary School Students: Data Processing

6

7

8

9

10

11

12

13

14

Study the table and answer this following question:

a. When did the biggest earthquake hit?

b. What was the biggest earthquake?

c. When did the lowest eartquake hit?

d. What was the lowest earthquake?

e. What can we learn from the data and the graph?

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19 Module for Grade 6 Primary School Students: Data Processing

LET’S PRACTICE

Mr. Zain needs a help in his research, work in group to complete the column of the

table. You have to do data research in internet, magazines, or other resources.

Copy the table below on a piece of paper.

NO COUNTRY YEAR RICHTER SCALE

NUMBERS OF VICTIMS

EFFECT

1

2

3

4

5

6

7

Study the table and present the data in a bar and line graphs!

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20 Module for Grade 6 Primary School Students: Data Processing

3. PICTOGRAPH

Mr. Zain collected data about the occupation of the earthquake victims in the shelter

by interviewing them. He presented the data in this chart

Pictograph also called picture chart, one picture usually represent a certain number

OCCUPATION OF THE EARTHQUAKE VICTIMS

NO OCCUPATION NUMBER OF THE EARTHQUAKE VICTIMS

1 Farmer

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21 Module for Grade 6 Primary School Students: Data Processing

2 Civil servant

3 Teacher

4 Merchant

5 Fisherman

NOTE: represent 10 person

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22 Module for Grade 6 Primary School Students: Data Processing

Based on the chart above, we can find that:

a. There are ______________ persons as farmer

b. There are ______________ persons as civil servant

c. There are ______________ persons as teacher

d. There are ______________ persons as merchant

e. There are ______________ persons as fisherman

f. The lowest numbers of occupation is ___________, __________ persons

g. The highest numbers of occupations is _____________, _____________

persons

h. There are ____________________ persons altogether.

LET’S PRACTICE

This data of favourite foods of the children in earthquake shelter

NO TYPES OF FOODS NUMBERS OF CHILDRENS

1 CANDY 15

2 CHOCOLATE 20

3 BREAD 14

4 NOODLES 17

5 NASI 9

6 CHICKEN 12

If represent 2 persons, present the data in pictograph.

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23 Module for Grade 6 Primary School Students: Data Processing

4. PIE CHART

Our earth consists of 75% of water and 25% of land.

We can show this fact in this table

Earth 100%

Water 75%

Land 25%

We can also show this in a graph called a pie-chart

Watter75%

Land25%

The Earth

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24 Module for Grade 6 Primary School Students: Data Processing

Based on Local newspaper (Yomiuri newspaper, 11 April 2011) Since 2005, local

governments in Kamaichi, Japan have invited experts in the field of disaster

management education to provide guidance to students, and one of the directives

given is “Tendenko”. This word is taken from the history of the Japanese experience

that repeatedly hit by tsunamis. Tendenko means "quickly climbed to higher ground

when the tsunami comes, do not think of others, including your family."

Desks and chairs remain covered with mud in a classroom at Okawa Elementary

School, devastated by the March 11 earthquake and tsunami in Ishinomaki, Miyagi

Prefecture, northern Japan on April 7, 2011. The main building is ripped open, with

trees jammed into second floor classrooms, and the gym and playground have been

reduced to muddied concrete foundations. (AP Photo/Vincent Yu)

When earthquake hit in 2011. Due to the school schedule is shorter at the end of

the semester, 80% of 184 in Kamaishi primary students go back earlier to their

home. The tsunami had destroyed so many schools, except those in the mountains,

but all students are reported safe. Meanwhile at Okawa Primary School, Ishinomaki,

Miyagi, of the 108 students, 75% of whom were killed and reported missing.

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25 Module for Grade 6 Primary School Students: Data Processing

This pie-chart below shows the percentage of the victims were reported missing and

killed in Okawa Primary School, Ishinomaki, Miyagi.

Study that both pie-charts.

In your opinion, how to draw a pie chart?

What should be taken into account in drawing a pie chart?

What is the measure of the central angles of red and red sectors? Why?

Mr. Zein collected data about the childrens’ favorite pets before earthquake and

tsunami hits. Among 100 childrens, 25 children kept fishes as pets, 50 childrens

kept birds, and the rest kept cats. How Mr. Zein will present the data in a pie chart?

Explain.

The pie chart based on the data collected by Mr. Zein can be presented like this. Do

you agree? Write your reason?

Missing and Death75%

Survive25%

The Victims and Survivors

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26 Module for Grade 6 Primary School Students: Data Processing

There are 180 childrens in a shelter, they are going to the temporary school. 45

childrens go to the temporary school on foot, 90 childrens go by school bus, and the

rest go by bicycle.

Draw a pie chart and explain how to draw that?

?25%

?25%

?50%

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27 Module for Grade 6 Primary School Students: Data Processing

LET’S PRACTICE

Work in Group

1. By referring to the pie chart shown below, one children will pose a question

for the others to answer

2. Take turns doing this

3. Ask as many question as you can

This pie chart showns how a children spends his time during the 24 hours of a day

in an earthquake shelther

Example of the questions: How many hours does the children spend on study?,

What fraction of the day does he spends for sleeping?

Sleeping8 hours

Rest and Playing3 hours

shares with others1 hours

Study2 hours

helping to recover their home

Others

24 hours

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28 Module for Grade 6 Primary School Students: Data Processing

5. More table and graph

1) Shinta and her friend make a fund raising event to help the children in

earthquake shelter.

the table shows the number of hundreds coins and five-hundreds coins

collected by five students during the first hour of fund raising event.

STUDENTS

HUNDREDS COIN FIVE-HUNDREDS COINS

TOTAL AMOUNT

NUMBERS OF COIN

COLLECTED

AMOUNT COLLECTED

(Rp)

NUMBERS OF COIN

COLLECTED

AMOUNT COLLECTED

(Rp)

Radjiv 20 2000 5 2500 4500

Clarisa 12 14

Azka 9 10

Nadya 15 5

Oppie 8 4

Total

Calculate the total amount that Radjiv collected

Radjiv collected a total of Rp _________________

Complete the table to find out how much the five students have collected

a. Who collected the most numbers of coins?

b. Who collected the most amount of money?

c. How much more did Clarisa collect than Nadya?

d. How much less did Oppie collect than Azka?

e. How much more must Radjiv collect to match the amount Nadya has

collected?

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29 Module for Grade 6 Primary School Students: Data Processing

2) The graphs below show the number of eggs gave by Mr. Hasan and Mr.

Sugeng to the earthquake victims last week from Monday to Thursday.

Eggs gave by Mr. Hasan

Eggs gave by Mr. Sugeng

Study the graphs and answers the following questions

0

50

100

150

200

250

300

Monday Tuesday Wednesday Thrusday

0

50

100

150

200

250

Monday Tuesday Wednesday Thrusday

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30 Module for Grade 6 Primary School Students: Data Processing

a. How many eggs did Mr. Hasan and Mr. Sugeng gave altogether on

Tuesday?

b. How many eggs did Mr. Hasan and Mr. Sugeng gave altogether from

Monday to Thursday?

c. On which days did Mr. Hasan gave more eggs than Mr. Sugeng?

d. On which days did Mr. Hasan gave more than 150 eggs?

e. On which days did Mr. Sugeng gave more than 180 eggs?

f. How many more eggs would Mr. Hasan have to gave on Tuesday in order to

match the number of eggs gave by Mr. Sugeng on the same day?

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31 Module for Grade 6 Primary School Students: Data Processing

C. MEAN, MEDIAN, and MODE

Basic Competence

2.2 Determine the mean and mode of data sets Indicators: The students will able to: a. Explain the definition of mean, mode, median and

quartile of discrete data b. Calculate the mean, mode, median and quartile of

discrete data

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32 Module for Grade 6 Primary School Students: Data Processing

1. UNDERSTANDING AVARAGE

Mr. Heru gave chocolate to 3 children in earthquake shelter. Ajeng got 4 chocolates,

Gulang got 9 chocolates, and Ahmad got 8 chocolates. If all the chocolates are

shared equally among the children, how many chocolates would each child get?

Explain your way?

Alternative Answer 1

Answer BEFORE SHARING

4 Chocolate

9 Chocolate

8 Chocolate

4+9+8 = 21

7 Chocolate

7 Chocolate

7 Chocolate

7+7+7= 21

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33 Module for Grade 6 Primary School Students: Data Processing

Alternative Answer 2

Another way is by collecting all of the chocolates and share equally among the

children, so that:

The number of chocolates altogether = 4 + 9 + 8 = 21.

So, each child gets 7 chocolates. 7 is called average of 4, 9, and 8

Average also called mean or rate.

LET’S PRACTICE

1. Ikhsan shared 225 candies to 15 friends. How many candies will his friends

get if Ikhsan shared the candies equally?

2. Adinda bought 20 books at a book fund raising event. The average cost of 15

of the books was Rp11.500,00. The total cost of the other 5 books was

Rp40.500,00. Find the average cost of the 20 books.

3. The average volume of milk in jug A and jug B is 165 ml. Jug A contains 40

ml of milk more than jug B. Find the volume in each jug.

4. Anggar sold 4 times as many brownies as Aghie at a school bazaar for an

earthquake victims. Both of them sold an average of 285 brownies. How

many more brownies did Anggar sell than Aghie?

5. Mr. Hasan involves the children in earthquake shelter in games. Team A and

Team B each has an equal numbers of children in each team. The total

number of children in each team is less than 10. The average score of the

children in team A is 48 marks. The average score of the children in team B

is 62 marks. The total score of team B is 42 marks more than that of team A.

Find the number of children is each team!

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34 Module for Grade 6 Primary School Students: Data Processing

2. MEDIAN and MODE

Can you show who is the children in the middle of the line?

How about if the numbers of the children is even?

Can you show who is the children in the midlle of the line?

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35 Module for Grade 6 Primary School Students: Data Processing

The middle number or value when all values in a set of data are arranged in

ascending order is called median

This data shows the weight of childrens in an earthquake shelter in kilograms

34, 45, 32, 40, 44

Arrange the data from the smallest to the biggest

____, _____, _____, ____, ____

The median of the data is _____

If the numbers of the data is even, the median is average of the two middle values

is calculated.

This data shows the weight of childrens in an earthquake shelter in kilograms

34, 45, 32, 40, 44, 33

Arrange the data from the smallest to the biggest

____, _____, _____, ____, ____, _____

What the median of the data is _____. How to find that median? Explain?

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36 Module for Grade 6 Primary School Students: Data Processing

Mr. Zain make a survey about favorite color. This table shows favorite colour of the

children in the shelter

NO COLOR THE NUMBERS OF

THE CHILDREN

1 RED 13

2 YELLOW 11

3 BLUE 9

4 GREY 8

5 GREEN 12

6 ORANGE 10

From that table we can find that:

a. The most favorite color is _______. How many children choose it?

________

b. The least favorite color is ______. How many children choose it? _________

The most commonly occurring value or class with the largest frequency is called

mode

So the mode of the data is ______

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37 Module for Grade 6 Primary School Students: Data Processing

LET’S PRACTICE

1. Find the median and mode of the following data:

12, 30, 40, 15, 25, 16, 23, 19, 20, 18, 17, 15, 11, 10, 14, 15, 10, 15

2. Table of body weight

WEIGHT STUDENTS

35 8

36 13

37 17

38 6

39 4

40 2

Find the mean, median, and mode of that data.

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38 Module for Grade 6 Primary School Students: Data Processing

LOOKING BACK ACTIVITIES

1. In shelter Mr. Hasan gave scores for team A.

Make a double bar graph for the following information:

Team A's Scores

SESSION 1: 99, 87, 90, 76, 100

SESSION 2: 100, 85, 100, 95, 90

Now, find the range, median, mode, and mean for each session.

2. Write a data set consisting of 10 numbers so that the difference between the

maximum and minimum data is twice the median. Show that your data set

satisfies the criteria.

PROJECT (work in group)

AWARNESS OF HAZARD AND DISASTER CAMPAIGN PROJECT

You are helping your society to more aware and prepare about hazard and disaster

that might be happened in your place.

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39 Module for Grade 6 Primary School Students: Data Processing

Hazards such as floods, earthquakes, and tsunamis become disasters only when

society lacks the ability to cope with them. In other words, hazards are natural while

disasters are not.

In your group you need to plan your campaign, do research about hazard or

disaster that happened in your place, and find the valid data, present and process

the data.

You need to carry out a survey to find out how your society ready and prepare

about the hazard or disaster that might be happened, and how their knowledge

about it. Think what question you are going to ask the people you survey. Think how

many people you are going to try and ask (be realistic)

After survey and research you've now carried out your survey and research data

and you need to report back for your campaign. You need to collect your results

together and produce some graphs to show the information you've collected.

Choose which type of graph you want to use and think carefully about titles on the

graph and how you label the axes.

Make sure that you produce graphs that people can see easily and that people,

most importantly, can understand easily.

You can also make a campaign slogan

or make a booklet for your campaign.

Work out who is going to say what in

your campaign and ask your friends to

join your campaign. Remember you

need to tell the society how to enhance

the awareness of the disaster or

hazard that might be happened in your

place.

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40 Module for Grade 6 Primary School Students: Data Processing

GLOSSARY

data: Information gathered by observing, counting or measuring (singular: datum).

data table: Represents and organizes data in a table format.

maximum: The largest or largest possible number or amount.

mean: A typical, or central, value for a set of numbers, often called the average. It is calculated

by finding the sum of all the numbers in the set and then dividing that sum by the number of

numbers. e.g. the mean of 5,4,7,8 is 24 divided by 4, or 6.

median: The middle value of a set of numbers when listed in order from least to greatest ( or

greatest to least). If there is an even number of data points, the median is the mean of the two

middle values. It is one way to determine the average number; e.g. , The median of the numbers

1 ,3,5,7, 8 is 5. The median of 1, 3, 5, 6, 8, 9 is 6.

mode: The value or values that occur most often in a set of data. It is one way to determine the

average number. In the numbers 3, 4, 4, 4, 5, 5, 6. the mode is 4.

minimum: The smallest or smallest possible number or amount.

range: All those values between and including the lowest and highest values in the data set; the

difference between the greatest and least values in a set of data.

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41 Module for Grade 6 Primary School Students: Data Processing