The document contains details from various activities involving data representation and analysis from Venn diagrams, tables, bar graphs and line graphs. Across the different representations, common themes that can be summarized are: 1) The graphs and diagrams generally show results from surveys, exams, or other data collection on topics like movie and food preferences, club memberships, exam performance, disease outbreaks etc. 2) Key details like maximum, minimum or equal values are consistently highlighted from the data based on comparisons between categories within each representation. 3) Brief overall conclusions are stated to concisely convey the main insight deduced from analyzing each graph or diagram.

1. Activity 21:
(a) 7
(b) 4
(c) 9
(d) 11 € 3
(f) 8
(g) 1
(h) 10
(i) 6
(j) 2
(k) 5

2. Activity 22:
The Venn diagram given above represents
three types of movies a group of girls of our
school like to watch. There are 63 girls.

3. Activity 22:
According to the details given in the above Venn diagram the
majority of the girls watch action movies. An equal number of
girls watch romantic movies and horror movies. 15 girls watch
action movies only. Seven children watch horror movies and
action movies only. There aren’t any girls who watch action
movies and romantic movies only. Ten girls watch all the three
types of movies. Nine girls do not watch any of the given
movies.

4. Activity 22:
As a whole, I can clearly say that action movies
are the most preferred types of movies among
the girls.

5. Activity 23:
The Venn diagram given above depicts the
number of memberships held in clubs by Grade
11 students of Ranpokunagama M.V. there are
three clubs. They are The Sports Club, The
Interact Club and The Philatelic Club.

6. Activity 23:
According to the details given in the Venn diagram, the
highest number of the Grade 11 students are members of The
Philatelic Club. More students are members of The Sports
Club than The Interact Club. 40students are members of The
Sports Club only. 25 students are members of all the three
clubs. However, 15 students are not members of any of the
given three clubs

7. Activity 23:
I can clearly find that The philatelic Club is the
most popular club among the students.

8. Activity 24:
The Venn diagram given above represents the
desserts a group of people ate after lunch at a
party. There ate three kinds of desserts. They
were ice – cream, watalappan and yoghurt.

9. Activity 24:
• According to the details given in the Venn diagram, the
highest number of the people ate watalappan for dessert. 20
people ate yoghurt only. 80 people ate one dessert items only.
Interestingly, 15 people ate all the three desserts depicted in
the Venn diagram. However, 18 people did not eat any of the
desserts given here. More people are ice-cream than yoghurt.

10. Activity 24:
• As a whole, I can see that watalappan was the most preferred
dessert among the people.

11. Activity 25:
• The Venn diagram given above depicts the result of a survey
conducted on using social media among a group of advanced
level students in a school. There are three types of social
media depicted in the Venn diagram. They are Facebook,
Twitter and WhatsApp.

12. Activity 25:
•According to the details given in the above
Venn diagram, the majority of the students use
WhatsApp . more students use Facebook than
Twitter. Two students use Facebook and Twitter
only. 15 students use all the three typs of social
media. However, 13 students do not use any
type of social media given above.

13. Activity 25:
•According to given Venn diagram it is clear
that WhatsApp is the most popular social media
among the students.

14. Activity 26:
(a) The table given above represents the term test marks
obtained by Nayani at two term tests for 6 subjects.
(b) the given table has three columns and each columns
represent the subjects, the first term test marks and the
second term test marks consecutively.
(c) According to the detail given in the table Nayani had the
highest marks for Science at both tests.
(d) She had the lowest marks for history at the first term test.
(e) She had equal marks for history and religion at the
second term test.

15. Activity 26:
(f) She had higher marks for English at the first term test
than at the second term test.
(g) She had lower marks for maths at the first term test than at
the second term test.
(h) Nayani scored equal marks for Science at both term tests.
(i) I find that Nayani is good at Science and she needs to work
hard for History.

16. Activity 27:
The pie chart given above represents the
leisure time activities a group of boys and girls
of our school engage in. Each pie chart
represents four leisure time activities.

17. Activity 27:
According to the details given in the pie charts
the highest percentage of the girls read books in their
leisure time while the highest percentage of the boys
play with friends. An equal percentage of both boys
and girls watch TV in their leisure time. More girls
read books than boys. A minimum of 5% of the boys
help their parents. In contrast, 30% of the girls help
their parents.

18. Activity 27:
As a whole I can clearly find that the majority
of the girls prefer reading books in their free
time while that of boys prefer playing with
friends

19. Activity 28:
The pie charts given above represent the
result of a survey conducted using a group of
boys and girls of Harischandra M.V. On time
they spend on smartphones separately during a
week. Each pie chart represents five activities.

20. Activity 28:
According to the details given in the two pie chart the
girls spend the highest number of hours for Music while in
contrast the boys spend the most part of their time for
engaging in Social media activities. Girls spend an equal
number of hours for News and Games. Boys spend a
minimum number of hours for News. Girls spend more time
on photography than boys.

21. Activity 28:
It is clear that boys are most interested in Social media
activities while the girls are most interested in Music

22. Activity 29:
•The bar graph given above depicts the result of
a survey conducted in the year 2022. It was
conducted to find out the reasons for Sri
Lankans to migrate. The “Y” axis represents the
percentage of migration while the “X” axis
represents the reason for migration.

23. Activity 29:
• According to the detail given in the bar graph the highest
percentage of the Sri Lankans migrated in 2022 seeking jobs.
It was as high as 76%. In contrast, the least percentage of the
Sri Lankans migrated due to political reasons. As a percentage
it stood at 5%. An equal percentage of Sri Lankans migrated
for higher education and business purposes. It was 40% each.
More people migrated for other reasons than for travelling.

24. Activity 29:
By analyzing the details given in the bar
graph. I can find that most of the Sri Lankans
were interested in seeking foreign jobs.

25. Activity 30:
(1) d
(2) f
(3) h
(4) j
(5) a
(6) g
(7) b
(8) i
(9) e
(10) c

26. Activity 31:
The bar graph given above shows the
average sale of six food items in our school
canteen. The “Y” axis represents the average
number of food items while the “X” axis
represents the names of the food items. The food
items are buns, sandwiches, rolls, doughnuts,
pancake and hotdogs.

27. Activity 31:
According to the details given in the bar
graph fish – rolls have the highest average sale.
In contrast, doughnuts have the lowest average
sale. The sale of sandwiches is higher than that
of hotdogs. Buns and pancakes have an equal
average sale. It is 15 items each.

28. Activity 31:
By analyzing the given bar graph I can conclude
that fish rolls are the most favorite food items
among the students of our school

29. Activity 32:
(1) c (2) i (3) e (4) h (5) f (6) j (7) a (8) d
(9) g (10) b

30. Activity 32:
(1) c (2) i (3) e (4) h (5) f (6) j (7) a (8) d
(9) g (10) b

31. Activity 33:
The pie chart given above depicts the results
of a survey conducted among the Grade 5
students of our school on their future ambitions.
There are six ambitions depicted in the chart.

32. Activity 33:
According to the details given in the pie chart, the highest
percentage of the Grade 5 students wish to be a doctor. It
stands at 30%. The least percentage of the students like to be a
politicians one day. An equal percentage of the students like to
be an engineer and teacher. It is 20% each. More students like
to be a soldier than to be a businessman.

33. Activity 33:
As a whole, I can clearly say that the most
preferred ambition among the students is to be a
doctor.

34. Activity 34:
(1) d (2) g (3) j (4) c (5) h (6) i (7) a (8) f
(9) l (10) b (11) e (12) k

35. Activity 35:
The table given above represents the marks
obtained by a group of students of Grade 12 A
Commerce class of Sbec Collage for three
subjects at the monthly test. The table has four
columns and they carry the names of the
students and the marks obtained for the three
subjects separately.

36. Activity 35:
According to the details given in the table Lakshani obtained
the highest marks for all the three subjects. She obtained 94
marks for Business Studies. Thileepan scored the second
highest marks for all the three subjects. Pasindu has 38 marks
for Econ. That was the lowest mark obtained by a students
among the 5 students. Abdul obtained equal marks for Econ
and Business Studies.

37. Activity 35:
According to the details given in the table Lakshani obtained
the highest marks for all the three subjects. She obtained 94
marks for Business Studies. Thileepan scored the second
highest marks for all the three subjects. Pasindu has 38 marks
for Econ. That was the lowest mark obtained by a students
among the 5 students. Abdul obtained equal marks for Econ
and Business Studies.

38. Activity 35:
By analyzing the marks, I can clearly say that
Lakshani is the cleverest students in the class.

39. Activity 36:
The line chart given above represents the
number of dengue patients reported in the
Gampaha district in the first six months of
2020,2021, and 2022. The Vertical axis
represents the number of patients while the
horizontal axis represents the months.

40. Activity 36:
According to the details given in the line chart the highest
number of dengue patients were reported in May 2020, 160
cases were reported in that month. The lowest number of 20
cases were reported in March 2022. There was an increase in
dengue patients after April in all the three years. In contrast a
gradual decrease in the number of cases could be observed
after February.

41. Activity 36:
As a whole, l can say, that there was a rise
in the spread of dengue in 2020.

42. Activity 37:
The line chart given above depicts the
number of Covid 19 patients reported in a
period of six months last year in The Western,
The Central and The Southern Provinces.

43. Activity 37:
According to the details given in the line chart the highest
number of Covid -19 patients wre reported from The Western
Province in May. In contrast, the lowest number of the Covid-
19 patients were reported in the same month from The
Southern Province. There was a gradual increase in Covid 19
cases from February to May in The Western Province. The
number of Covid – 19 cases were comparatively higher in The
Central Province than in The Southern Province.

44. Activity 37:
As a whole I can find that the health situation in The Southern
Province was more satisfactory in the given period than the
other two province.

45. Activity 38:
(1) The horizontal bar graph given above depicts the sale of books at a
book exhibition held last month.
(2) The vertical axis depicts the types of books while the horizontal
axis depicts the number of books sold.
(3) There are five types of books. They are wild life books, biographies,
adventure stories, novels and fairy tales.
(4) According to the details given in the graph adventure stories had the
highest sale

46. Activity 38:
.
(5) Biographies had comparatively a minimum sale of 100 books.
(6) Wild life books and novels had an equal sale. That was 250 each.
(7) The sale of fairy tales was higher than the sale of biographies.
(8) I can clearly find that people are most interested in reading
adventure stories.

47. Activity 39:
The horizontal bar graph given above depicts
the entrance of different type of motor vehicles
to Colombo over the Kelani bridge last Sunday.
The vertical axis represents the different types
of vehicles while the horizontal axis represents
the number of vehicles.

48. Activity 39:
According to the details given in the graph the highest
number of vehicles which entered Colombo over the Kelani
bridge were motor cars. It stood at 20000 motor cars. More
motor cycles entered Colombo than Vans last Sunday. The
number of tipper trucks while entered Colombo was the least.
The entrance of trishaws to Colombo stood the second
highest.

49. Activity 39:
As a whole I can see that the most preferred mode of transport
to Colombo is motor car

50. Activity 40:
The Venn diagram given above represents the number of
students who faild three subjects at the OL exam in our school
last year. The three subjects were English, Science and Math.

51. Activity 40:
According to the details given the Venn diagram the
majority of the students failed Math. The least number of
students failed English. There weren’t any students who failed
both Science and English only. Seven students failed both
Math and Science only. 5 students failed all the three subjects.
20 students failed Math only. 10 students did not fail any of
the subjects given in Venn diagram.

52. Activity 40:
By analyzing the details given in Venn diagram, it is clear
that the majority of the students were weak in Math.