If ¯x is the mean of x1,x2…,xn then for a≠0, the mean of ax1,ax2…,axn,x1a,x2a,…,xna is (a) (a+1a)¯x (a) (a+1a)¯x2 (c) (a+1a)¯xn (d) (a+1a)¯x2n

If ¯x is the mean of x1,x2…,xn then for a≠0, the mean of ax1,ax2�

1.	If ¯x is the mean of x1,x2…,xn then for a≠0, the mean of ax1,ax2…,axn,x1a,x2a,…,xna is (a) (a+1a)¯x (a) (a+1a)¯x2 (c) (a+1a)¯xn (d) (a+1a)¯x2n
Answer» If $¯ x$ is the mean of $x_{1}, x_{2} \dots, x_{n}$ then for $a \neq 0$ , the mean of $a x_{1}, a x_{2} \dots, a x_{n}, \frac{x_{1}}{a}, \frac{x_{2}}{a}, \dots, \frac{x_{n}}{a}$ is (a) $(a + \frac{1}{a}) ¯ x$ (a) $(a + \frac{1}{a}) \frac{¯ x}{2}$ (c) $(a + \frac{1}{a}) \frac{¯ x}{n}$ (d) $\frac{(a + \frac{1}{a}) ¯ x}{2 n}$