Correlation Coefficient

Q.

The value of the correlation coefficient between two variables lies between

1. $0$ and $1$

2. $-1$ and $1$

3. $-\infty$ and $0$

4. $0$ and $\infty$

Q.

If $2$ random variables $x$ and $y$ of a bivariate distribution are connected by the relationship $3x+2y=4$, then correlation coefficient $r_{xy}=$

1. $1$

2. $-1$

3. $\frac{2}{3}$

4. $\frac{-2}{3}$

Q.

If $r=–0.97$, then

1. Correlation is negative and curved

2. Correlation is linear and negative

3. Correlation is in the third and fourth quadrant

4. None of the above