Statistics and Probability (KVPY Stream SBSX (Class 12 & 1st Year B.Sc.) Math): Questions 4  6 of 9
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Question number: 4
» Statistics and Probability » Probability of an Event
Appeared in Year: 2013
Question
In a tournament with five teams, each team plays against every other team exactly once. Each game is won by one of the playing teams and the winning team scores one point, while the losing team scores zero. Which of the following is NOT necessarily true? (Model Paper)
Choices
Choice (4)  Response  

a.  There are at least two teams which have at most two points each. 

b.  There are at least two teams which have at least two points each 

c.  There are at most three terms which have at least three points each 

d.  There are at most four terms which have at most two points each. 

Question number: 5
» Statistics and Probability » Addition Theorem
Appeared in Year: 2014
Question
Two person A and B throw a (fair) die (six – faced cube with faces numbered from 1 to 6) alternately, starting with A. The first person to get an outcome different from the previous one by the opponent wins. The probability that B wins is:
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 6
» Statistics and Probability » Standard Deviation
Appeared in Year: 2013
Question
Let . A list of numbers has mean and standard deviation . A new list of numbers is made as follows: . The mean and the standard deviation of the new list are . Which of the following is necessarily true? (Model Paper)
Choices
Choice (4)  Response  

a.  many or may not be equal to 

b. 


c. 


d. 

