Tag: linear correlation
Questions Related to linear correlation
Write True/False in the following statement:
If regression coefficient are $0.8$ and $0.2$ then the value of corelation coefficient is $+0.4$
It is perfect correlaion if
The coefficient of correlation is always between
It is moderate degree of relation if
It is high degree of relation if
The formula for correlation coeficient $r$ of two variables $x$ and $y$ is
Write True/False in the following statement:
The value of correlation coefficient lies between $-2$ to $+2$
State the following statement is true or false
Consider the following statements :
1. Two independent variables are always uncorrelated.
2. The coefficient of correlation between two variables X and Y is positive. When X decreases then Y decreases.
Which of the above statements is/are correct ?