if matrix is random vector and matrix is fixed if z is a matrix that is a fixed matrix what is coefficient of random vector what is random vector covariance of a random vector after a linear transformation? covariance of a random vector after a linear transformation is called if a t-value is random vector and a fixed matrix is fixed, what is the function of the matrix covariance random vector what is vector of a variable after a linear transformation what is the random vector in linear transformation what type of transformation is the random vector and fixed matrix why do i always use random vectors when a vector has a random vector, what is the coefficient of covariance? what is the coefficient of randomness in matrix what is linear transformation and random vector what is the random vectors which is the random vector? what is random vector what is the coefficient of random vector after a linear transformation what kind of vector is random and what is fixed matrix what is the coefficient of randomization in a vector?