EduSahara™ Worksheet

Question 1

1.

The scores obtained by 10 students in a test are given below. Find the mean score.
1

19

14

15

1

18

19

9

4

12

(i)

19
(ii)

1
(iii)

18
(iv)

11

1
5
(v)

13

Question 2

2.

Rainfall of 13 days (in mm) are given below. Find the mean rainfall.

10

14

5

10

15

10

15

8

13

7

8

12

13

(i)

153
13

mm
(ii)

141
13

mm
(iii)

166
13

mm
(iv)

140
13

mm
(v)

142
13

mm

Question 3

3.

Scores of 14 students are given below. Find the mean score.

75

70

80

83

89

80

90

75

75

77

76

88

79

89

(i)

563
7
(ii)

577
7
(iii)

564
7
(iv)

565
7
(v)

570
7

Question 4

4.

Temperatures of 12 days (in °C) are given below. Find the mean temperature.

25

30

26

35

25

35

30

35

29

32

30

28

(i)

28

°C
(ii)

31

°C
(iii)

29

°C
(iv)

30

°C
(v)

32

°C

Question 5

5.

Weights of 12 students (in kg) are given below. Find the mean weight.

56

47

47

58

58

50

60

49

50

59

45

40

(i)

631
12

kg
(ii)

619
12

kg
(iii)

207
4

kg
(iv)

643
12

kg
(v)

155
3

kg

Question 6

6.

Daily wages of 13 labourers (in ₹) are given below. Find the mean wage.

467

476

450

482

457

443

491

309

385

388

323

323

370

(i)

₹

414.62
(ii)

₹

412.62
(iii)

₹

412.77
(iv)

₹

412.69
(v)

₹

413.62

Question 7

7.

Find the mean of all prime numbers between 20 and 80.

(i)

48
(ii)

52
(iii)

50
(iv)

54
(v)

51

Question 8

8.

Find the mean of all prime numbers between 30 and 70.

(i)

535
11
(ii)

437
9
(iii)

49
(iv)

439
9

Question 9

9.

Find the mean of first 8 multiples of 13.

(i)

59
(ii)

119
2
(iii)

115
2
(iv)

233
4
(v)

117
2

Question 10

10.

Find the mean of first 7 whole numbers.

(i)

2
(ii)

0
(iii)

3
(iv)

6
(v)

4

Question 11

11.

Find the mean of first 7 multiples of 20.

(i)

81
(ii)

80
(iii)

82
(iv)

78
(v)

79

Question 12

12.

Find the mean of the first 20 odd numbers.

(i)

19
(ii)

21
(iii)

20
(iv)

17
(v)

22

Question 13

13.

Find the mean of the first 10 even numbers.

(i)

12
(ii)

9
(iii)

11
(iv)

10
(v)

13

Question 14

14.

The marks obtained by 12 students in a test are given below. Find their mean marks.

16

23

20

7

47

48

26

16

40

44

24

30

(i)

343
12
(ii)

397
14
(iii)

341
12
(iv)

57
2
(v)

113
4

Question 15

15.

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

141

149

133

174

149

151

129

156

133

158

126

143

165

146

(i)

2081
14

cm
(ii)

2055
14

cm
(iii)

1027
7

cm
(iv)

2067
14

cm
(v)

2053
14

cm

Question 16

16.

Heights of 13 plants (in cm) are given below. Find the mean height.

56

56

99

54

95

78

53

74

72

91

86

80

62

(i)

958
13

cm
(ii)

956
13

cm
(iii)

957
13

cm
(iv)

982
13

cm
(v)

969
13

cm

Question 17

17.

Ages of 15 students (in years) are given below. Find the mean age.

14

10

13

12

15

11

13

10

14

13

13

15

10

13

10

(i)

72
5

years
(ii)

64
5

years
(iii)

62
5

years
(iv)

67
5

years
(v)

63
5

years

Assignment Key