Simple Regression and Correlation Multiple Choice Questions and answers (mcqs)

 1- Dependence of one Variable on other Independent Variable is called as: ?

(A) Regression   (B) Correlation 

Option (A) is correct.

Note: Y = a + bX is a Regression Line. Must remember that 'Y' is a Dependent Variable and 'X' is an Independent Variable. Next, 'a' and 'b' are Least-Squares Estimates.

2- The Independent Variable is called as: ?

(A) Regressand    (B) Regressor 

Option (B) is correct.

3- Regressand is also called as: ?

(A) Predictand      (B) Predictor 

Option (A) is correct.

Note: Must note that's points......

Dependent Variable is called as Regressand, Predictand, Explained Variable. But, Independent Variable is called as Regressor, Predictor, Explanatory Variable.

4- Inexact Relationship is also defined as: ?

(A) Mathematical Relationship  (B) Probabilistic Relationship

Option (B) is correct.

5- Explained Variation + Unexplained Variation = ?

(A) Total Variation   (B) Co-efficient of Variation

Option (A) is correct.

6- Relationship between two Variables is called as: ?

(A) Regression      (B) Correlation

Option (B) is correct.

7- When r = +1, then Correlation is: ?

(A) Perfect Positive   (B) Perfect Negative

Option (A) is correct.

Note: But, When r = - 1, then correlation is perfect negative.

8- Correlation Coefficient 'r' lies between: ?

(A) -2 & +2    (B) -1 & +1

Option (B) is correct.

Note: Correlation Co-efficient 'r' is Independent of  change of Origin and Scale.

best of luck!

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