EduSahara™ Worksheet

Question 1

1.

The scores obtained by 8 students in a test are given below. Find the mean score.
3

12

14

10

2

17

7

3

(i)

15
(ii)

3
(iii)

8

1
2
(iv)

2
(v)

17

Question 2

2.

Rainfall of 11 days (in mm) are given below. Find the mean rainfall.

15

6

15

7

9

13

12

6

12

15

13

(i)

123
11

mm
(ii)

145
11

mm
(iii)

134
11

mm
(iv)

124
11

mm
(v)

125
11

mm

Question 3

3.

Scores of 15 students are given below. Find the mean score.

71

85

75

74

72

83

89

90

85

81

72

82

73

79

75

(i)

1201
15
(ii)

1187
15
(iii)

396
5
(iv)

1216
15
(v)

1186
15

Question 4

4.

Temperatures of 11 days (in °C) are given below. Find the mean temperature.

31

29

30

32

30

35

31

30

29

26

29

(i)

332
11

°C
(ii)

334
11

°C
(iii)

343
11

°C
(iv)

333
11

°C
(v)

354
11

°C

Question 5

5.

Weights of 10 students (in kg) are given below. Find the mean weight.

45

60

44

53

57

45

58

40

59

45

(i)

253
5

kg
(ii)

254
5

kg
(iii)

258
5

kg
(iv)

263
5

kg
(v)

51

kg

Question 6

6.

Daily wages of 15 labourers (in ₹) are given below. Find the mean wage.

465

376

455

422

348

399

381

431

425

341

411

390

310

303

366

(i)

₹

389.20
(ii)

₹

388.20
(iii)

₹

390.20
(iv)

₹

388.40
(v)

₹

388.60

Question 7

7.

Find the mean of all prime numbers between 40 and 80.

(i)

179
3
(ii)

297
5
(iii)

59
(iv)

415
7
(v)

299
5

Question 8

8.

Find the mean of all prime numbers between 40 and 70.

(i)

51
(ii)

54
(iii)

52
(iv)

55
(v)

53

Question 9

9.

Find the mean of first 7 multiples of 18.

(i)

74
(ii)

71
(iii)

72
(iv)

70
(v)

73

Question 10

10.

Find the mean of first 7 whole numbers.

(i)

1
(ii)

3
(iii)

4
(iv)

2
(v)

6

Question 11

11.

Find the mean of first 9 multiples of 16.

(i)

80
(ii)

78
(iii)

79
(iv)

81
(v)

82

Question 12

12.

Find the mean of the first 10 odd numbers.

(i)

12
(ii)

10
(iii)

9
(iv)

7
(v)

11

Question 13

13.

Find the mean of the first 10 even numbers.

(i)

12
(ii)

13
(iii)

9
(iv)

10
(v)

11

Question 14

14.

The marks obtained by 14 students in a test are given below. Find their mean marks.

18

47

31

6

15

36

29

16

29

26

29

37

31

6

(i)

128
5
(ii)

176
7
(iii)

180
7
(iv)

178
7
(v)

76
3

Question 15

15.

Heights of 12 students (in cm) are given below. Find the mean height.

138

165

140

134

132

131

126

158

164

131

169

173

(i)

147

cm
(ii)

587
4

cm
(iii)

595
4

cm
(iv)

589
4

cm
(v)

591
4

cm

Question 16

16.

Heights of 10 plants (in cm) are given below. Find the mean height.

94

62

67

87

97

81

96

55

75

69

(i)

157
2

cm
(ii)

392
5

cm
(iii)

803
10

cm
(iv)

793
10

cm
(v)

783
10

cm

Question 17

17.

Ages of 14 students (in years) are given below. Find the mean age.

11

14

13

14

13

10

10

10

11

13

13

12

13

14

(i)

199
14

years
(ii)

86
7

years
(iii)

171
14

years
(iv)

173
14

years
(v)

185
14

years

Assignment Key