Statistics and Probability (IMO Mathematics Olympiad (SOF) Class 9): Questions 85  92 of 101
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Question number: 85
» Statistics and Probability
Question
The median of the following numbers 45, 36, 88, 65, 44, 21, 85, 47, 74 is________
Choices
Choice (4)  Response  

a.  47 

b.  54 

c.  88 

d.  74 

Passage
The temperature chart of a patient is given below:
Question number: 86 (1 of 5 Based on Passage) Show Passage
» Statistics and Probability
Question
The percentage decrease in temperature between 17.00 hrs and 19.00 hrs is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 87 (2 of 5 Based on Passage) Show Passage
» Statistics and Probability
Question
The average temperature of the patient between 17.00 hrs, 19.00 hrs and 21.00 hrs is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 88 (3 of 5 Based on Passage) Show Passage
» Statistics and Probability
Question
The percentage increase in temperature between 11.00 hrs and 15.00 hrs is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 89 (4 of 5 Based on Passage) Show Passage
» Statistics and Probability
Question
The average temperature of the patient between 13.00 hrs, 15.00 hrs and 17.00 hrs is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 90 (5 of 5 Based on Passage) Show Passage
» Statistics and Probability
Question
The percentage increase in temperature between 9.00 hrs and 15.00 hrs is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 91
» Statistics and Probability
Question
A number x is chosen at random from the numbers 3, 2, 1, 0, 1, 2, 3. The probability that is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 92
» Statistics and Probability
Question
A box contains 12 balls out of which x are black. If one ball is drawn at random from the box, what is the probability that it will be a black ball? If 6 more black balls are put in the box, the probability of drawing a black ball is now double of what is was before, then x is________
Choices
Choice (4)  Response  

a.  3 

b.  7 

c.  5 

d.  2 
