EduSahara™ Worksheet

Question 1

1.

The scores obtained by 8 students in a test are given below. Find the mean score.
18

7

2

6

14

4

19

3

(i)

19
(ii)

2
(iii)

6

1
2
(iv)

9

1
8
(v)

17

Question 2

2.

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

13

15

9

12

9

12

5

14

6

14

10

13

10

(i)

168
13

mm
(ii)

155
13

mm
(iii)

144
13

mm
(iv)

142
13

mm
(v)

11

mm

Question 3

3.

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

78

85

70

79

75

88

73

89

84

83

77

75

80

73

90

(i)

1229
15
(ii)

80
(iii)

1199
15
(iv)

1201
15
(v)

1214
15

Question 4

4.

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

26

25

28

26

35

31

35

26

25

25

33

29

28

32

25

(i)

144
5

°C
(ii)

153
5

°C
(iii)

143
5

°C
(iv)

148
5

°C
(v)

29

°C

Question 5

5.

Weights of 13 students (in kg) are given below. Find the mean weight.

49

53

47

54

42

41

40

46

52

44

41

47

42

(i)

47

kg
(ii)

46

kg
(iii)

48

kg
(iv)

44

kg
(v)

45

kg

Question 6

6.

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

470

369

343

301

455

380

350

373

441

493

375

389

451

394

485

(i)

₹

404.80
(ii)

₹

406.60
(iii)

₹

405.60
(iv)

₹

405.00
(v)

₹

404.60

Question 7

7.

Find the mean of all prime numbers between 40 and 60.

(i)

49
(ii)

243
5
(iii)

241
5
(iv)

339
7

Question 8

8.

Find the mean of all prime numbers between 50 and 70.

(i)

59
(ii)

57
(iii)

63
(iv)

61
(v)

60

Question 9

9.

Find the mean of first 5 multiples of 18.

(i)

54
(ii)

57
(iii)

55
(iv)

52
(v)

53

Question 10

10.

Find the mean of first 6 whole numbers.

(i)

3
(ii)

7
2
(iii)

9
4
(iv)

5
2
(v)

3
2

Question 11

11.

Find the mean of first 9 multiples of 12.

(i)

58
(ii)

60
(iii)

59
(iv)

61
(v)

63

Question 12

12.

Find the mean of the first 10 odd numbers.

(i)

9
(ii)

8
(iii)

10
(iv)

11
(v)

12

Question 13

13.

Find the mean of the first 15 even numbers.

(i)

18
(ii)

16
(iii)

15
(iv)

14
(v)

17

Question 14

14.

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

40

15

43

31

41

45

21

21

39

33

26

40

(i)

131
4
(ii)

395
12
(iii)

331
10
(iv)

459
14
(v)

397
12

Question 15

15.

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

162

150

171

175

174

126

126

128

139

142

146

132

163

(i)

1935
13

cm
(ii)

1934
13

cm
(iii)

1947
13

cm
(iv)

1960
13

cm
(v)

1936
13

cm

Question 16

16.

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

56

99

93

71

98

90

53

51

72

55

78

75

(i)

301
4

cm
(ii)

305
4

cm
(iii)

297
4

cm
(iv)

299
4

cm
(v)

149
2

cm

Question 17

17.

Ages of 10 students (in years) are given below. Find the mean age.

13

13

15

10

10

10

15

10

12

11

(i)

121
10

years
(ii)

129
10

years
(iii)

139
10

years
(iv)

12

years
(v)

119
10

years

Assignment Key