If the mean of a set of observations `x_1, x_2,...........,x_10` is 20, then the mean of `x_1+4,x_2+8,x_3+12,........,x_10+40`

If the means of a set of observations x_(1), x_(2),…..x_(10) is 20, then the mean of x_(1)+4, x_(2)+8, x_(3)+12,….x_(10) +40 is

If the mean of a set of observation x_1 , x_2 , …….x_10 is 20 then the mean of x_1 +4, x_2 +8, x_3+ 12, ………… x_10 +40 is

If the mean of a set of observations x_(1), x_(2),……,x_(10) is 40, then the mean of x_(1)+4, x_(2)+8, x_(3)+12,…….,x_(10)+40 is

If the mean of a set of observations x_(1), x_(2),……,x_(10) is 40, then the mean of x_(1)+4, x_(2)+8, x_(3)+12,…….,x_(10)+40 is

If the mean of a set of observations x_1 , x_2 ________ x_10 is 20. Find the mean of x_1 + 4, x_2 + 8, x_3 + 12,_________ x_10 +40.

If the mean of a set of observations x_(1), x_(2),….., ……, x_(10) " is " 20 . Find the mean of x_(1) + 4, x_(2) + 8, x_(3) + 12, …., ……, x_(10) + 40 .

If the arithmetic mean of the observations x_1,x_2,x_3,.............x_n is 1 , then the arithmetic mean of x_1/k,x_2/k,x_3/k,.............x_n/k , (k >0) is

If the mean of observations x_1.x_2,x_3…..x_n is barx then the mean of x_1+a,x_2+a,…...x_n+a will be

If the mean of observations x_1,\ x_2,\ ....,\ x_n is x , then the mean of x_1+a ,\ x_2+a ,\ .... ,\ x_n+a is (a) a x (b) x -a (c) x +a (d) ( x )/a

If the mean of observations x_i, x_2,……., x_n is barx , then the mean of (x_1 + a), (x_2 + a), ….., (x_n + a) is____