Correlation and Regression (CA Foundation Maths, Statistics, Logic, and Reasoning): Questions 12  18 of 42
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Question number: 12
» Correlation and Regression
Question
The method applied for deriving the regression equations is known asChoices
Choice (4)  Response  

a.  Concurrent deviation 

b.  Product moment 

c.  Least squares 

d.  Normal equation 

Question number: 13
» Correlation and Regression
Question
The correlation between shoesize and intelligence is
Choices
Choice (4)  Response  

a.  Negative 

b.  Positive 

c.  Zero 

d.  None of the above 

Question number: 14
» Correlation and Regression
Question
Pearson’s correlation coefficient is used for finding
Choices
Choice (4)  Response  

a.  Correlation for linear relation only 

b.  Correlation for curvilinear relation only 

c.  Correlation for any type of relation 

d.  Question does not provide sufficient data or is vague 

Question number: 15
» Correlation and Regression
Question
For a bivariate frequency table, the maximum number of marginal distributions is
Choices
Choice (4)  Response  

a.  2 

b.  1 

c.  p 

d.  p + q 

Question number: 16
» Correlation and Regression
Question
What are the limits of the correlation coefficient?
Choices
Choice (4)  Response  

a.  –1 and 1 

b.  No limit 

c.  0 and 1, including the limits 

d.  –1 and 1, including the limits 

Question number: 17
» Correlation and Regression
Question
The correlation between the speed of an automobile and the distance travelled by it after applying the brakes is
Choices
Choice (4)  Response  

a.  Zero 

b.  Negative 

c.  Positive 

d.  None of the above 

Question number: 18
» Correlation and Regression
Question
What are the limits of the two regression coefficients?
Choices
Choice (4)  Response  

a.  One positive and the other negative 

b.  No limit 

c.  Product of the regression coefficient must be numerically less than unity. 

d.  Must be positive 
