EduSahara™ Worksheet

Question 1

1.

The scores obtained by 9 students in a test are given below. Find the mean score.
18

13

7

11

5

4

8

14

13

(i)

18
(ii)

14
(iii)

10

1
3
(iv)

11
(v)

4

Question 2

2.

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

7

13

8

11

6

9

11

11

10

6

11

7

11

(i)

122
13

mm
(ii)

121
13

mm
(iii)

134
13

mm
(iv)

147
13

mm
(v)

123
13

mm

Question 3

3.

Scores of 11 students are given below. Find the mean score.

76

74

71

90

89

70

80

88

87

90

87

(i)

82
(ii)

84
(iii)

81
(iv)

83
(v)

80

Question 4

4.

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

31

26

33

33

27

34

27

31

25

33

29

32

(i)

181
6

°C
(ii)

385
12

°C
(iii)

121
4

°C
(iv)

373
12

°C
(v)

361
12

°C

Question 5

5.

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

48

47

51

42

55

57

48

60

42

40

(i)

51

kg
(ii)

48

kg
(iii)

49

kg
(iv)

50

kg
(v)

47

kg

Question 6

6.

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

370

422

320

424

372

493

478

369

459

339

361

314

495

(i)

₹

401.38
(ii)

₹

401.23
(iii)

₹

403.23
(iv)

₹

401.31
(v)

₹

402.23

Question 7

7.

Find the mean of all prime numbers between 20 and 100.

(i)

869
15
(ii)

1097
19
(iii)

985
17
(iv)

983
17
(v)

981
17

Question 8

8.

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

(i)

535
11
(ii)

437
9
(iii)

439
9
(iv)

49

Question 9

9.

Find the mean of first 7 multiples of 20.

(i)

78
(ii)

80
(iii)

83
(iv)

81
(v)

79

Question 10

10.

Find the mean of first 8 whole numbers.

(i)

7
2
(ii)

4
(iii)

13
4
(iv)

5
2
(v)

9
2

Question 11

11.

Find the mean of first 8 multiples of 15.

(i)

68
(ii)

133
2
(iii)

269
4
(iv)

137
2
(v)

135
2

Question 12

12.

Find the mean of the first 15 odd numbers.

(i)

16
(ii)

14
(iii)

15
(iv)

13
(v)

18

Question 13

13.

Find the mean of the first 15 even numbers.

(i)

18
(ii)

15
(iii)

17
(iv)

14
(v)

16

Question 14

14.

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

10

6

3

42

12

49

24

40

8

8

40

28

(i)

47
2
(ii)

89
4
(iii)

45
2
(iv)

23
(v)

43
2

Question 15

15.

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

134

162

153

158

175

154

137

167

153

173

(i)

793
5

cm
(ii)

784
5

cm
(iii)

157

cm
(iv)

783
5

cm
(v)

788
5

cm

Question 16

16.

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

97

55

83

51

52

86

80

60

76

58

97

94

(i)

297
4

cm
(ii)

889
12

cm
(iii)

913
12

cm
(iv)

445
6

cm
(v)

901
12

cm

Question 17

17.

Ages of 11 students (in years) are given below. Find the mean age.

14

14

11

11

13

13

12

13

11

12

13

(i)

139
11

years
(ii)

138
11

years
(iii)

137
11

years
(iv)

148
11

years
(v)

159
11

years

Assignment Key