Correlation and Regression (CA Foundation Maths, Statistics, Logic, and Reasoning): Questions 7  11 of 42
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Question number: 7
» Correlation and Regression
Question
The regression coefficients remain unchanged due to a
Choices
Choice (4)  Response  

a.  Shift of origin 

b.  Shift of scale 

c.  None of the above 

d.  Question does not provide sufficient data or is vague 

Question number: 8
» Correlation and Regression
Question
Scatter diagram is considered for measuring
Choices
Choice (4)  Response  

a.  Linear relationship between two variables 

b.  Curvilinear relationship between two variables 

c.  Both a. and b. are correct 

d.  None of the above 

Question number: 9
» Correlation and Regression
Question
Product moment correlation coefficient may be defined as the ratio of
Choices
Choice (4)  Response  

a.  The product of standard deviations of the two variables to the covariance between them 

b.  The covariance between the variables to the product of their standard deviations 

c.  The covariance between the variables to the product of the variances of them 

d.  Question does not provide sufficient data or is vague 

Question number: 10
» Correlation and Regression
Question
Product moment correlation coefficient is considered for
Choices
Choice (4)  Response  

a.  Finding the amount of correlation 

b.  Finding the nature of correlation 

c.  Both a. and b. are correct 

d.  Question does not provide sufficient data or is vague 

Question number: 11
» Correlation and Regression
Question
What is the quickest method to find correlation between two variables?
Choices
Choice (4)  Response  

a.  Method of product moment correlation 

b.  Scatter diagram 

c.  Method of rank correlation 

d.  Method of concurrent deviation 
