EduSahara™ Worksheet

Question 1

1.

The air distance of some cities from Delhi (in km) are given below. Find the city that has maximum distance.

(i)

Ahmedabad
(ii)

Mysore
(iii)

Ernakulam
(iv)

Chennai
(v)

Visakhapatnam

Question 2

2.

In inclusive form representation, the observation
52
falls in which class?

(i)

37

-

47
(ii)

53

-

62
(iii)

41

-

51
(iv)

32

-

42
(v)

42

-

52

Question 3

3.

There are certain creatures in a zoo. Find the type of creature that has 135 creatures presense in the zoo.

(i)

Water animals
(ii)

Land animals
(iii)

Birds
(iv)

Wild animals
(v)

Reptiles

Question 4

4.

Weights of 20 students are given below. Find the median.

Weight (in kg)

40

43

47

48

49

50

51

57

60

No. of students

3

1

4

3

3

2

1

2

1

(i)

49

kg
(ii)

50

kg
(iii)

47

kg
(iv)

46

kg
(v)

48

kg

Question 5

5.

Given the sample data, prepare the class interval table in
inclusive
form with
1
as min value and a class size of
8
.
1

12

49

30

5

6

13

17

43

41

11

14

24

45

23

29

19

2

(i)

Class-Interval

1 - 8

9 - 16

17 - 24

25 - 32

33 - 40

41 - 48

49 - 56

Frequency

4

1

4

2

0

3

4
(ii)

Class-Interval

1 - 8

9 - 16

17 - 24

25 - 32

33 - 40

41 - 48

49 - 56

Frequency

4

4

1

2

0

3

1
(iii)

Class-Interval

1 - 8

9 - 16

17 - 24

25 - 32

33 - 40

41 - 48

49 - 56

Frequency

4

4

4

2

0

3

1
(iv)

Class-Interval

1 - 9

9 - 17

17 - 25

25 - 33

33 - 41

41 - 49

49 - 57

Frequency

4

4

4

2

0

3

1

Question 6

6.

Which of the following class intervals are in exclusive form?

a)	45 - 53 , 53 - 61 , 61 - 69...
b)	20.5 - 29.5 , 29.5 - 38.5 , 38.5 - 47.5...
c)	48 - 56 , 57 - 65 , 66 - 74,...
d)	21 - 29 , 29 - 37 , 37 - 45,...
e)	21 - 29 , 30 - 38 , 39 - 47,...

(i)

{c,e,d}
(ii)

{c,a}
(iii)

{c,a,b}
(iv)

{e,b}
(v)

{a,b,d}

Question 7

7.

The following bar graph shows the export earnings of a country (in thousand crore) during five years. Find the year that has minimum export earnings.

(i)

2009-10
(ii)

2008-09
(iii)

2006-07
(iv)

2007-08
(v)

2010-11

Question 8

8.

Given below is the column-graph showing heights of some mountain peaks. Find the mountain that has maximum height.

(i)

Kanchenjunga
(ii)

Kilimanjaro
(iii)

Mount Everest
(iv)

Appalachian
(v)

Nanda Devi

Question 9

9.

Which of the following are continuous variables?

a)	Population of cities
b)	Wages of workers in a factory
c)	Number of members in a family
d)	Number of players in a team
e)	Temperature at a place over a month

(i)

{b,e}
(ii)

{a,b}
(iii)

{c,e}
(iv)

{c,e,b}
(v)

{d,a,b}

Question 10

10.

The observations of an ungrouped data are
x

1
,
x

2
,
x

3
and
x

1
<
x

2
<
x

3
.

(i)
28

,

28

,

168
(ii)
18

,

28

,

88
(iii)
16

,

28

,

86
(iv)
14

,

28

,

84

Question 11

11.

Given the bar graph, find the maximum frequency

(i)

95
(ii)

90
(iii)

80
(iv)

85
(v)

75

Question 12

12.

If some random sample data is arranged in a frequency distribution table in
exclusive form
with
1
-
8
as the first class,
then the observation
30
falls in which class?

(i)

28.5

-

36.5
(ii)

30

-

37
(iii)

29

-

36
(iv)

29.5

-

35.5
(v)

28

-

35

Question 13

13.

Scores of 30 students are given below. Find the mean.

Score

73

74

78

79

82

83

84

86

88

90

No. of students

1

2

5

6

2

3

4

3

2

2

(i)

409
5
(ii)

408
5
(iii)

82
(iv)

418
5
(v)

413
5

Question 14

14.

Scores of 12 students are given below. Find the mode score.

73

78

73

81

80

88

86

72

88

90

81

73

(i)

75
(ii)

73
(iii)

74
(iv)

72
(v)

71

Question 15

15.

If the sum of the following frequency distribution is
43
,

find the value of 'x'.

Class-Interval

Frequency

20 - 26

10

27 - 33

2

34 - 40

5

41 - 47

8

48 - 54

x

55 - 61

1

62 - 68

6

69 - 75

8

(i)

2
(ii)

3
(iii)

6
(iv)

0
(v)

4

Question 16

16.

Find the median of the first 20 odd numbers.

(i)

21
(ii)

23
(iii)

19
(iv)

17
(v)

20

Question 17

17.

Weights of 15 students (in kg) are given below. Find the median weight.

49

57

56

47

44

51

54

55

54

57

40

53

57

53

59

(i)

55

kg
(ii)

56

kg
(iii)

52

kg
(iv)

54

kg
(v)

53

kg

Question 18

18.

Heights of 11 students (in cm) are given below. Find the mean height.

136

126

155

145

134

171

164

141

156

156

146

(i)

1641
11

cm
(ii)

1652
11

cm
(iii)

1632
11

cm
(iv)

1631
11

cm
(v)

1630
11

cm

Question 19

19.

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

(i)

2010
(ii)

2008
(iii)

2011
(iv)

2009
(v)

2007

Question 20

20.

Given the sample data, prepare the class interval table in
exclusive
form with
7
as min value and a class size of
8
.
31

10

34

46

48

23

45

9

49

10

23

45

28

15

36

7

21

23

16

(i)

Class-Interval

7 - 15

15 - 23

23 - 31

31 - 39

39 - 47

47 - 55

Frequency

4

3

4

3

3

2
(ii)

Class-Interval

7 - 15

15 - 23

23 - 31

31 - 39

39 - 47

47 - 55

Frequency

4

4

3

3

3

2
(iii)

Class-Interval

7 - 15

15 - 23

23 - 31

31 - 39

39 - 47

47 - 55

Frequency

4

2

4

3

3

3
(iv)

Class-Interval

7 - 14

15 - 22

23 - 30

31 - 38

39 - 46

47 - 54

Frequency

4

3

4

3

3

2
(v)

Class-Interval

7 - 15

15 - 23

23 - 31

31 - 39

39 - 47

47 - 55

Frequency

4

3

2

3

3

2

Question 21

21.

Given an even number of random samples with the middle two samples as

find the value of x.

(i)

9
(ii)

7
(iii)

6
(iv)

4
(v)

5

Question 22

22.

If the sample data with range 60 has to be divided into 10 class intervals, then the length of the class is

(i)

6
(ii)

7
(iii)

5
(iv)

9
(v)

3

Question 23

23.

A frequency distribution table is given below.
Find the
mean .

Class-Interval

10 - 20

21 - 31

32 - 42

43 - 53

54 - 64

65 - 75

76 - 86

Frequency

39

4

5

34

37

6

22

(i)

2346
49
(ii)

2395
49
(iii)

2298
49
(iv)

2299
49
(v)

2297
49

Question 24

24.

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

(i)

11 a.m.
(ii)

7 a.m.
(iii)

9 a.m.
(iv)

3 p.m.
(v)

1 p.m.

Question 25

25.

The following table shows the weights of
72
persons in a group.
Find the
mean weight.

Weight (in kg)

30 - 37

37 - 44

44 - 51

51 - 58

58 - 65

65 - 72

72 - 79

No. of persons

8

7

11

8

9

16

13

(i)

4285
72

kg
(ii)

4213
72

kg
(iii)

4141
72

kg
(iv)

2071
36

kg
(v)

1381
24

kg

Assignment Key