If the mean and standard deviation of 10 observations `x_1,x_2,......,x_10` are 2 and 3 respectively, then the mean of `(x_1+1)^2,(x_2+1)^2,.....,(x_10+1)^2` is equal to

If both the mean and the standard deviation of 50 observatios x_(1), x_(2),….x_(50) are equal to 16, then the mean of (x_(1)-4)^(2), (x_(2)-4)^(2),….,(x_(50)-4)^(2) is

If both the mean and the standard deviation of 50 observatios x_(1), x_(2),….x_(50) are equal to 16, then the mean of (x_(1)-4)^(2), (x_(2)-4)^(2),….,(x_(50)-4)^(2) is

The mean and standart deviation of five observations x_1,x_2,x_3,x_4,x_5 and are 10 and 3 respectively, then variance of the observation x_1,x_2,x_3,x_4,x_5,-50 is equal to

If both the mean and the standard deviation of 50 observations x_(1), x_(2),…, x_(50) are equal to 16, then the mean of (x_(1) -4)^(2), (x_(2) -4)^(2), …., (x_(50) - 4)^(2) is k. The value of (k)/(80) is _______.

If both the mean and the standard deviation of 50 observations x_(1), x_(2),…, x_(50) are equal to 16, then the mean of (x_(1) -4)^(2), (x_(2) -4)^(2), …., (x_(50) - 4)^(2) is k. The value of (k)/(80) is _______.

If the mean and standard deviation of 5 observations x_(1),x_(2),x_(3),x_(4),x_(5) are 10 and 3 respectively,then the variance of 6 observations x_(1),x_(2),x_(3),x_(4),x_(5) and 50 is equal to

The mean and standard deviation of 10 observations x_(1), x_(2), x_(3)…….x_(10) are barx and sigma respectively. Let 10 is added to x_(1),x_(2)…..x_(9) and 90 is substracted from x_(10) . If still, the standard deviation is the same, then x_(10)-barx is equal to

The mean and standard deviation of 10 observations x_(1), x_(2), x_(3)…….x_(10) are barx and sigma respectively. Let 10 is added to x_(1),x_(2)…..x_(9) and 90 is substracted from x_(10) . If still, the standard deviation is the same, then x_(10)-barx is equal to