Statistics, Machine Learning, Data Science, Artificial Intelligence, Deep Learning.
random variable is given by μx and μy respectively. (X1-μx) = This operation returns a positive value as X1 > μx (Y1-μy) = This operation returns a positive value as Y1 > μy Thus multiplication of both positive numbers will be positive. (X2-μx) = This operation returns a negative value as X2 < μx