EduSahara™ Worksheet

Question 1

1.

Read the column-graph given below. Find the year that has minimum food grains production.

(i)

2010
(ii)

2009
(iii)

2007
(iv)

2008
(v)

2011

Question 2

2.

Students of a certain locality use different modes of travel to school as given below. Find the mode of travel that has minimum students.

(i)

By Foot
(ii)

Moped
(iii)

RTC Bus
(iv)

School Van
(v)

School Bus

Question 3

3.

Heights of 14 students (in cm) are given below. Find the median height.

129

134

147

137

138

154

141

146

130

149

158

175

154

145

(i)

291
2

cm
(ii)

146

cm
(iii)

295
2

cm
(iv)

293
2

cm

Question 4

4.

The following outcomes were noted when a dice was thrown 20 times. Identify the frequency distribution table for the given data.

2

5

2

5

2

6

4

2

3

4

5

1

4

2

4

3

4

4

4

1

(i)

Outcome

1

2

3

4

5

6

No. of outcomes

2

5

2

7

3

1
(ii)

Outcome

1

2

3

4

6

No. of outcomes

2

3

5

4

6
(iii)

Outcome

1

2

3

4

5

6

No. of outcomes

2

6

2

6

3

1
(iv)

Outcome

1

2

3

4

5

6

No. of outcomes

2

3

5

2

5

3
(v)

Outcome

1

2

3

4

5

6

No. of outcomes

2

5

3

6

3

1

Question 5

5.

The marks obtained by 10 students in a test are given below. Find their mean marks.

1

28

6

6

12

6

22

6

40

48

(i)

33
2
(ii)

69
4
(iii)

35
2
(iv)

18
(v)

37
2

Question 6

6.

Rainfall of 15 days (in mm) are given below. Find the mode rainfall.

6

13

15

12

15

8

11

15

15

13

6

9

8

15

15

(i)

15

mm
(ii)

16

mm
(iii)

13

mm
(iv)

17

mm
(v)

14

mm

Question 7

7.

Scores of 10 students are given below. Find the mean.

Score

75

80

84

86

87

90

No. of students

1

2

2

1

2

2

(i)

169
2
(ii)

422
5
(iii)

863
10
(iv)

853
10
(v)

843
10

Question 8

8.

Convert the exclusive form of the class interval 33.5 - 42.5 to inclusive form

(i)

34

-

42
(ii)

33.5

-

42.5
(iii)

34.5

-

41.5
(iv)

33.5

-

42
(v)

34

-

42.5

Question 9

9.

On a certain day, the temperature in a city was recorded as shown below. Find the time that has 10 °C temperature.

(i)

3 p.m.
(ii)

11 a.m.
(iii)

9 a.m.
(iv)

5 a.m.
(v)

5 p.m.

Question 10

10.

If the mean of
4
samples is
31
,

what is the new mean if each number is multiplied by
7
.

(i)

217
(ii)

218
(iii)

216
(iv)

214
(v)

220

Question 11

11.

Find the mean of all prime numbers between 10 and 60.

(i)

425
13
(ii)

487
15
(iii)

359
11
(iv)

423
13
(v)

421
13

Question 12

12.

The number of children in 22 families are given below. Identify the frequency distribution table for the given data.

3

1

0

2

1

1

1

1

5

0

0

2

0

3

3

3

0

5

4

3

5

1

(i)

No. of children

0

1

2

3

4

5

No. of families

4

4

5

3

3

3
(ii)

No. of children

0

1

3

4

5

No. of families

2

2

6

7

5
(iii)

No. of children

0

1

2

3

4

5

No. of families

5

6

2

5

1

3
(iv)

No. of children

0

1

2

3

4

5

No. of families

4

7

2

5

1

3

Question 13

13.

Convert the continuous form of the class interval 26.5 - 35.5 to discontinuous form

(i)

26.5

-

35
(ii)

27

-

35.5
(iii)

27.5

-

34.5
(iv)

27

-

35
(v)

26.5

-

35.5

Question 14

14.

If the mean of the following frequency distribution is
8

29
30
,

find the value of 'x'.

Value

Frequency

5

1

6

5

7

x

8

2

9

6

10

5

11

3

12

5

(i)

2
(ii)

5
(iii)

1
(iv)

3
(v)

4

Question 15

15.

There are certain creatures in a zoo. Find the type of creature that has maximum presense in the zoo.

(i)

Water animals
(ii)

Wild animals
(iii)

Beast animals
(iv)

Domestic animals
(v)

Birds

Question 16

16.

Weights of 26 students are given below. Find the mode.

Weight (in kg)

43

47

50

52

53

55

56

58

59

No. of students

4

7

2

2

1

2

4

2

2

(i)

48

kg
(ii)

45

kg
(iii)

49

kg
(iv)

47

kg
(v)

46

kg

Question 17

17.

The true lower limit and true upper limit of the class with frequency x is

Class-Interval

Frequency

30 - 36

5

36 - 42

19

42 - 48

x

48 - 54

21

54 - 60

23

(i)

41.5

-

48.5
(ii)

42.5

-

47.5
(iii)

41.5

-

48
(iv)

42

-

48.5
(v)

42

-

48

Question 18

18.

If the length of the class is 13, then the number of class intervals needed to represent data with range 50 is

(i)

5
(ii)

3
(iii)

7
(iv)

4
(v)

2

Question 19

19.

Which of the following class intervals are in exclusive form?

a)	22 - 27 , 27 - 32 , 32 - 37,...
b)	37 - 42 , 42 - 47 , 47 - 52...
c)	21.5 - 27.5 , 27.5 - 33.5 , 33.5 - 39.5...
d)	40 - 45 , 46 - 51 , 52 - 57,...
e)	22 - 27 , 28 - 33 , 34 - 39,...

(i)

{d,a}
(ii)

{e,b}
(iii)

{a,b,c}
(iv)

{d,a,b}
(v)

{d,e,c}

Question 20

20.

The scores obtained by 15 students in a test are given below. Find the mode.
6

16

9

3

6

19

25

14

16

11

13

27

18

20

6

(i)

24
(ii)

6
(iii)

3
(iv)

15
(v)

14

1
2

Question 21

21.

The scores obtained by 6 students in a test are given below. Find the median.
7

3

19

6

10

11

(i)

3
(ii)

19
(iii)

8

1
2
(iv)

9

1
3
(v)

16

Question 22

22.

Temperatures of 15 days (in °C) are given below. Find the median temperature.

26

25

29

29

35

32

26

30

32

29

30

25

29

34

30

(i)

28

°C
(ii)

30

°C
(iii)

29

°C
(iv)

31

°C
(v)

27

°C

Question 23

23.

Heights of 20 plants are given below. Find the median.

Height (in cm)

55

67

72

76

81

90

91

92

94

No. of plants

2

1

1

3

3

3

3

3

1

(i)

175
2

cm
(ii)

173
2

cm
(iii)

171
2

cm
(iv)

86

cm

Question 24

24.

Temperatures of 20 days are given below. Find the median.

Temperature (in degree C)

25

26

27

29

30

31

32

33

34

No. of days

1

2

2

1

1

4

3

1

5

(i)

32

°C
(ii)

31

°C
(iii)

29

°C
(iv)

33

°C
(v)

30

°C

Question 25

25.

Ages of 12 students (in years) are given below. Find the mode age.

14

11

15

11

14

14

13

15

13

10

11

11

(i)

10

years
(ii)

12

years
(iii)

9

years
(iv)

11

years
(v)

13

years

Assignment Key