If ¯x is the mean of x1,x2,...,xn and ¯y is the mean of y1,y2,...,yn . If ¯z is the mean of x1,x2,...,xn , y1,y2,...,yn then ¯z is equal to :

If ¯x is the mean of x1,x2,...,xn and ¯y is the mean of y1,y2,...,y

1.	If ¯x is the mean of x1,x2,...,xn and ¯y is the mean of y1,y2,...,yn . If ¯z is the mean of x1,x2,...,xn , y1,y2,...,yn then ¯z is equal to :
Answer» If $¯ x$ is the mean of $x_{1}, x_{2}, . . ., x_{n}$ and $¯ y$ is the mean of $y_{1}, y_{2}, . . ., y_{n}$ . If $¯ z$ is the mean of $x_{1}, x_{2}, . . ., x_{n}$ , $y_{1}, y_{2}, . . ., y_{n}$ then $¯ z$ is equal to :