A linear statistical relationship between two variables?
cov (x, y) / 𝜎 x2
Explanation for correct option:
Step- Find the relation between covariance (cov) and standard deviation () of two variables x, y.
Let cov(x, y) = covariance between the variables x and y.
The standard deviation of x variable.
The standard deviation of y variable.
cov = Covariance is the inner product also called scalar or dot product of two vectors in that space.
It forms the following relationship between .
Where is the correlation of .
is a normalized version of their cov(x, y)
Therefore option (C) is the correct option