Statistics and Probability (IMO- Mathematics Olympiad Class 9): Questions 42 - 47 of 101

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 919 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 42

» Statistics and Probability

MCQ▾

Question

The mean, median and mode of the following numbers

12, 24, 12, 23, 24, 22, 25, 26, 25, 26, 26, 28, 25, 22, 26, 28, 29, 30, 11, 12 are________

Choices

Choice (4) Response

a.

22, 26, 25

b.

22.8, 25, 26

c.

25, 22, 25

d.

26, 25, 22

Question number: 43

» Statistics and Probability

MCQ▾

Question

Mean of 11 observations is 17.50, if one observation value 15 is deleted. The mean of remaining observations is ________

Choices

Choice (4) Response

a.

17.75

b.

18.75

c.

15.75

d.

16.75

Question number: 44

» Statistics and Probability

MCQ▾

Question

If the mean of 10 observations is 20 and that of another 15 observations is 16, then the mean of 25 observations is ________

Choices

Choice (4) Response

a.

17.6

b.

18.2

c.

17

d.

18

Question number: 45

» Statistics and Probability

MCQ▾

Question

The King, queen and jack of clubs are removed from a deck of 52 cards and then well-shuffled. One card id selected from the remaining cards. The probability of getting a club is ________

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 46

» Statistics and Probability

MCQ▾

Question

The probability of guessing the correct answer to a certain test question isEquation . If the probability of not guessing the correct answer to this question is Equation , then x = ________

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

4

d.

3

Passage

A car is going on a long journey for 16 hours, starting at 5.00 hrs. The speed of the car at different hours is given below:

car with its speed values is given

Calculate the values as asked in question

Time (in hrs):

5

7

9

11

13

17

15

19

21

Speed (in km/hour):

40

50

60

80

70

65

75

60

50

From the above table answer the following questions.

Question number: 47 (1 of 3 Based on Passage) Show Passage

» Statistics and Probability

MCQ▾

Question

The percentage of increase in speed during 9.00 hrs and 11.00 hrs is ________

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

f Page
Sign In