Assuming a Linear Relationship Between X and Y, If the Coefficient

Short Answer

Assuming a linear relationship between X and Y, if the coefficient of correlation (r) equals - 0.30, a) there is no correlation.
b) the slope $\left( b _ { 1 } \right)$ is negative.
c) variable $X$ is larger than variable $Y$ .
d) the variance of $X$ is negative.