CA Foundation Maths, Statictics, Logic, and Reasoning: Questions 63  69 of 154
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Question number: 63
» Theoretical Distributions Binomial
Question
The important characteristic (s) of Bernoulli trials
Choices
Choice (4)  Response  

a.  Trials are infinite 

b.  Each trial is associated with just two possible outcomes. 

c.  Trials are independent 

d.  Both b. and c. are correct 

Question number: 64
» Theoretical Distributions Binomial
Question
For Poisson fitting to an observed frequency distribution,
Choices
Choice (4)  Response  

a.  We equate the Poisson parameter to the median of the distribution. 

b.  We equate the Poisson parameter to the mean of the frequency distribution. 

c.  We equate the Poisson parameter to the mode of the distribution. 

d.  All of the above 

Question number: 65
» Statistical Description of Data » Diagrammatic Representation of Data
Question
In order to compare two or more related series, we consider
Choices
Choice (4)  Response  

a.  Multiple bar chart or Grouped Bar Chart 

b.  Multiple bar chart 

c.  Grouped bar chart 

d.  None of the above 

Question number: 66
» Statistical Description of Data » Frequency Distribution
Question
Relative frequency for a particular class
Choices
Choice (4)  Response  

a.  Lies between 0 and 1, both inclusive 

b.  Lies between 0 and 1 

c.  Lies between –1 to 1. 

d.  Lies between –1 and 0 

Question number: 67
Question
If the coefficient of correlation between two variables is –0.9, then the coefficient of determination is
Choices
Choice (4)  Response  

a.  0.81 

b.  0.1 

c.  0.9 

d.  0.19 

Question number: 68
» Theoretical Distributions Binomial
Question
Poisson distribution may be
Choices
Choice (4)  Response  

a.  Unimodal or Bimodal 

b.  Multimodal. 

c.  Unimodal 

d.  Bimodal 

Question number: 69
» Theoretical Distributions Binomial
Question
A binomial distribution is
Choices
Choice (4)  Response  

a.  Never symmetrical 

b.  Symmetrical when p = 0.5 

c.  Never positively skewed 

d.  Never negatively skewed 
