Correlation and Regression (CA Foundation Maths, Statictics, Logic, and Reasoning): Questions 1  6 of 42
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Question number: 1
» Correlation and Regression
Question
for a classification of bivariate data, the maximum number of conditional distributions is
Choices
Choice (4)  Response  

a.  p + q 

b.  pq 

c.  p 

d.  p or q 

Question number: 2
» Correlation and Regression
Question
If all the plotted points in a scatter diagram lie on a single line, then the correlation is
Choices
Choice (4)  Response  

a.  Perfect positive 

b.  Either Perfect Negative or Perfect Positive 

c.  Perfect negative 

d.  Question does not provide sufficient data or is vague 

Question number: 3
» Correlation and Regression
Question
If the plotted points in a scatter diagram are evenly distributed, then the correlation is
Choices
Choice (4)  Response  

a.  Negative 

b.  Positive 

c.  Zero 

d.  All of the above 

Question number: 4
» Correlation and Regression
Question
When r = 1, all the points in a scatter diagram would lie
Choices
Choice (4)  Response  

a.  On a straight line directed from lower left to upper right 

b.  On a straight line 

c.  On a straight line directed from upper left to lower right 

d.  All of the above 

Question number: 5
» Correlation and Regression
Question
If there are two variables x and y, then the number of regression equations could be
Choices
Choice (4)  Response  

a.  2 

b.  Any number 

c.  3 

d.  1 

Question number: 6
» Correlation and Regression
Question
Scatter diagram helps us to
Choices
Choice (4)  Response  

a.  Compute the extent of correlation between two variables 

b.  Find the nature correlation between two variables 

c.  Obtain the mathematical relationship between two variables 

d.  None of the above 
