If the SD of `x_(1) , x_(2) , x_(3) , …., x_(n) ` is 5 , then find SD of `x_(1) + 5 , x_(2) + 5 , x_(3) + 5 , …, x_(n) + 5`.

If S.D of x_(1), x_(2), x_(3),….x_(n),… is sigma , then find S.D of -x_(1), -x_(2), -x_(3),….-x_(n) ?

If the S.D of x_(1),x_(2),x_(3),........x_(n) is 6, then the S.D of -x_(1),-x_(2),.......,-x_(n) is

If the mean of the scores x_(1), x_(2), x_(3), x_(4), x_(5) "and" x_(6) is x, then mean of 5x_(1), 5x_(2), 5x_(3), 5x_(4), 5x_(5), "and" 5x_(6) is ______.

The mean of X_(1),x_(2) ,………, x_(n) is 10 ,then the mean of 5x_(1),5x_(21) ….. 5_(x)n is:

Let the equation x^(5) + x^(3) + x^(2) + 2 = 0 has roots x_(1), x_(2), x_(3), x_(4) and x_(5), then find the value of (x_(2)^(2) - 1)(x_(3)^(2) - 1)(x_(4)^(2) - 1)(x_(5)^(2) - 1).

If the standard deviation of x_(1),x_(2),….,x_(n) is 3.5 then the standard deviation of -2x_(1)-3, -2x_(2)-3,….,-2x_(n)-3 is

If the standard deviation of x_(1),x_(2),….,x_(n) is 3.5 then the standard deviation of -2x_(1)-3, -2x_(2)-3,….,-2x_(n)-3 is