Statistics and Probability (IMO- Mathematics Olympiad (SOF) Class 9): Questions 93 - 99 of 101

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Passage

A Bus is going on a long journey for 25 hours, starting at 6.00 hrs. The speed of the car at different hours is given below:

Bus with its speed values is given

Calculate the values as asked in question

Time (in hrs):

6

8

9

13

14

18

20

22

25

Speed (in km/hour):

30

60

50

40

60

70

80

60

20

From the above table answer the following questions.

Question number: 93 (1 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

The average speed (in km/hour) between 6.00 hrs, 8.00 hrs, 9.00 hrs and 13.00 hrs is ________

Choices

Choice (4) Response

a.

45

b.

67

c.

48

d.

96

Question number: 94 (2 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

The percentage of increase in speed during 14.00 hrs and 18.00 hrs is ________

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 95 (3 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

The percentage of decrease in speed during 22.00 hrs and 25.00 hrs is ________

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 96

» Statistics and Probability

MCQ▾

Question

In a class test, in Science, 45 students scored 88 marks, 15 students scored 75 marks and 5 scored 60 marks. The mean of their score is (approximately) ________

Choices

Choice (4) Response

a.

75 marks

b.

83 marks

c.

80 marks

d.

90 marks

Question number: 97

» Statistics and Probability

MCQ▾

Question

The mean, median and mode of the following numbers 2,4, 5,6, 7,6, 5,4, 3,2, 1,1, 1,6, 8,8, 4,3, 2,2 are________

Choices

Choice (4) Response

a.

3,4, 3

b.

4,4, 2

c.

3,3, 5

d.

3,4, 5

Question number: 98

» Statistics and Probability

MCQ▾

Question

Mean marks scored by 100 students were found to be 120. Later it was observed that a score of 59 was misread as 95. Then the correct mean is ________

Choices

Choice (4) Response

a.

179.82

b.

169

c.

169.82

d.

119.64

Question number: 99

» Statistics and Probability

MCQ▾

Question

A contractor employed 14 labourers at Rs. 18 each per day, 12 labourers at Rs. 22 each per day, 9 labourers at Rs. 32 each per day and 5 labourers at Rs. 62 each per day. The average wages paid is ________

Choices

Choice (4) Response

a.

Rs. 28

b.

Rs. 14

c.

Rs. 30

d.

Rs. 26

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