If the mean deviation about mean of the numbers `x,2x,3x,...,29x, x gt 0` is `(420)/(29)` then `x` equals

If mean deviations about median of x, 2x, 3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x is 30, then |x| equals:-

Find the mean deviation about the mean for the data: x_(i)1030507090 42428168

If the mean of the set of numbers x_(1),x_(2),x_(3),...,x_(n) is bar(x), then the mean of the numbers x_(i)+2i,1<=i<=n is

If the mean of the set of numbers x_(1),x_(2),...x_(n) is bar(x), then the mean of the numbers x_(i)+2i,1<=i<=n is

If both the standard deviation and mean of data x_(1),x_(2),x_(3),......x_(50) are 16, then the mean of the data set (x_(1)-4)^(2),(x_(2)-4)^(2),(x_(3)-4)^(2),...(x_(50)-4)^(2) is

The arithmetic mean of two numbers x and y is 3 and geometric mean is 1. Then x^(2)+y^(2) is equal to

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 gt 0) is

Consider any set of 201 observations x_(1),x_(2), …, x_(200),x_(201) . It is given that x_(1) lt x_(2) lt … lt x_(200) lt x_(201). Then, the mean deviation of this set of observations about a point k is minimum, when k equals